67486 + Interview Questions in Secondary School in Physics

1.	What is the practical application of magnet
Answer» EXPLANATION: MAGNET is USED in MOTOR

1.

What is the practical application of magnet

Answer»

EXPLANATION:

MAGNET is USED in MOTOR

Discussion

2.	Water expand on reducing it's temperature below ..........°C
Answer» Answer: WATER expands on reducing its temperature below 4 degree Celsius. EXPLANATION: The 'expansion of water' is unusual because most liquids expand on cooling. At 4 degrees, water has the 'highest density' and water will expand WHETHER it is HEATED or COOLED beyond this temperature.

2.

Water expand on reducing it's temperature below ..........°C

Answer»

Answer:

WATER expands on reducing its temperature below 4 degree Celsius. EXPLANATION: The 'expansion of water' is unusual because most liquids expand on cooling. At 4 degrees, water has the 'highest density' and water will expand WHETHER it is HEATED or COOLED beyond this temperature.

Discussion

3.	cause of water pollution.. ❤
Answer» Answer: causes of WATER pollution: wastage of factories are drained into rivers. increase in the amount of sulphur dioxide in atmosphere cause acid rain which pollute the water resources like rivers and sea.. mining activities are also responsible for water pollution accidental oil leakeage ALSO cause water pollution. Explanation: (¯`·.¸¸.·´¯`·.¸¸.-> hope it help <-.¸¸.·´¯`·.¸¸.·´¯)

3.

cause of water pollution.. ❤

Answer»

Answer:

causes of WATER pollution:

wastage of factories are drained into rivers.
increase in the amount of sulphur dioxide in atmosphere cause acid rain which pollute the water resources like rivers and sea..
mining activities are also responsible for water pollution
accidental oil leakeage ALSO cause water pollution.

Explanation:

(¯`·.¸¸.·´¯`·.¸¸.-> hope it help <-.¸¸.·´¯`·.¸¸.·´¯)

Discussion

4.	Oct option in each of the followthe correct dimensional formula- \|\| \|\| (b) (MI \| \| \|(c) mass, time and velocityI dy is the error in the measurement of(a) .100%anyc)100idiThe numerical value of one newton into dyne isay 10(b) 101(cITP + 0 = Rand + 0 = R. Then the at
Answer» ANSWER: c.100 $#(*@ bdhshziz^&¤^#92tzuiajknnf #92cruising and a money MAKING the iron pillar in Qutub minar to guestbook and the prime minister's QUESTIONS about cleaning the canals which consists of m to be elicited a

4.

Oct option in each of the followthe correct dimensional formula- || || (b) (MI | | |(c) mass, time and velocityI dy is the error in the measurement of(a) .100%anyc)100idiThe numerical value of one newton into dyne isay 10(b) 101(cITP + 0 = Rand + 0 = R. Then the at

Answer»

ANSWER:

c.100 $#(*@

bdhshziz^&¤^#92tzuiajknnf #92cruising and a money MAKING the iron pillar in Qutub minar to guestbook and the prime minister's QUESTIONS about cleaning the canals which consists of m to be elicited a

Discussion

5.	List out the materials to find the relative density of the liquid
Answer» Answer: Relative density, or specific gravity,[1][2] is the ratio of the density (MASS of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with RESPECT to water at its densest (at 4 °C or 39.2 °F); for gases, air at room temperature (20 °C or 68 °F) in the reference. The term "relative density" is often preferred in scientific usage. It is DEFINED as a ratio of density of particular substance with that of water.

5.

List out the materials to find the relative density of the liquid

Answer»

Answer:

Relative density, or specific gravity,[1][2] is the ratio of the density (MASS of a unit volume) of a substance to the density of a given reference material. Specific gravity for liquids is nearly always measured with RESPECT to water at its densest (at 4 °C or 39.2 °F); for gases, air at room temperature (20 °C or 68 °F) in the reference. The term "relative density" is often preferred in scientific usage. It is DEFINED as a ratio of density of particular substance with that of water.

Discussion

6.	An electron in the hydrogen atom jumps from excitedstate n to the ground state. The wavelength soemitted illuminates a photosensitive material havingwork function 12.75 eV If the stopping potential ofthe photoelectron is 10 V, then the value of n isTAIPMT (Mains)-2011)(1) 5(2) 2(3) 3(4) 4
Answer» ANSWER: 5 is answer for this QUESTION

6.

An electron in the hydrogen atom jumps from excitedstate n to the ground state. The wavelength soemitted illuminates a photosensitive material havingwork function 12.75 eV If the stopping potential ofthe photoelectron is 10 V, then the value of n isTAIPMT (Mains)-2011)(1) 5(2) 2(3) 3(4) 4

Answer»

ANSWER:

5 is answer for this QUESTION

Discussion

7.	Write Archimedos pascal's principles
Answer» Explanation: ARCHIMEDES' principle states that any object COMPLETELY or partially SUBMERGED in a fluid experiences an upward force equal in MAGNITUDE to the WEIGHT of the fluid displaced by the object, as seen in Equation 1. ... The buoyant force is equal to the weight of the fluid displaced

7.

Write Archimedos pascal's principles

Answer»

Explanation:

ARCHIMEDES' principle states that any object COMPLETELY or partially SUBMERGED in a fluid experiences an upward force equal in MAGNITUDE to the WEIGHT of the fluid displaced by the object, as seen in Equation 1. ... The buoyant force is equal to the weight of the fluid displaced

Discussion

8.	Define least count of a vernier caliper?how do you determine it?
Answer» Explanation: VERNIER caliper LEAST counts formula is calculated by dividing the smallest READING of the MAIN scale with the total number of divisions of the vernier scale.LC of vernier caliper is the difference between one smallest reading of the main scale and one smallest reading of vernier scale which is 0.1 mm 0R 0.01 cm

8.

Define least count of a vernier caliper?how do you determine it?

Answer»

Explanation:

VERNIER caliper LEAST counts formula is calculated by dividing the smallest READING of the MAIN scale with the total number of divisions of the vernier scale.LC of vernier caliper is the difference between one smallest reading of the main scale and one smallest reading of vernier scale which is 0.1 mm 0R 0.01 cm

Discussion

9.	an aeroplane on a Runway starts from rest and picks up a velocity of 180 km/hour and takes off. In doing so, it covers a Runway of 1.5 km. calculate (i) the uniform acceleration acting on the aeroplane and (ii) the time in which it takes off.
Answer» Answer: uniform acceleration is 1.66m/s^2 time taken is 30s Explaination : velocity = 180Km/ HR = 50 m/s DISPLACEMENT = 1.5Km = 1500M Velocity = change in displacement (ds) _________________________ time (t) t= ds/v = 1500÷50 t = 30s = 0.00833hr acceleration = change in velocity / time = 50 / 30 = 1.66 m/s^2

9.

an aeroplane on a Runway starts from rest and picks up a velocity of 180 km/hour and takes off. In doing so, it covers a Runway of 1.5 km. calculate (i) the uniform acceleration acting on the aeroplane and (ii) the time in which it takes off.

Answer»

Answer:

uniform acceleration is 1.66m/s^2

time taken is 30s

Explaination :

velocity = 180Km/ HR = 50 m/s

DISPLACEMENT = 1.5Km = 1500M

Velocity = change in displacement (ds)

_________________________

time (t)

t= ds/v = 1500÷50

t = 30s = 0.00833hr

acceleration = change in velocity / time

= 50 / 30

= 1.66 m/s^2

Discussion

10.	State which of the following situations are possible and gives an example for each of these :(a) an object moving with an acceleration in the perpendicular direction . (b) an object moving in certain direction with an acceleration in the perpendicular direction
Answer» ANSWER: it is a TANGENT to the CIRCLE which is PERPENDICULAR

10.

State which of the following situations are possible and gives an example for each of these :(a) an object moving with an acceleration in the perpendicular direction . (b) an object moving in certain direction with an acceleration in the perpendicular direction

Answer»

ANSWER:

it is a TANGENT to the CIRCLE

which is PERPENDICULAR

Discussion

11.	What causes volcanic eruptions ?????
Answer» Answer: Volcanoes are FORMED by eruptions of lava and ash when magma rises through cracks or weak-spots in the Earth's crust. A build up of PRESSURE in the earth is released, by things such as a plate movement which forces molten rock to EXPLODED into the air CAUSING a volcanic eruption.

11.

What causes volcanic eruptions ?????

Answer»

Answer:

Volcanoes are FORMED by eruptions of lava and ash when magma rises through cracks or weak-spots in the Earth's crust. A build up of PRESSURE in the earth is released, by things such as a plate movement which forces molten rock to EXPLODED into the air CAUSING a volcanic eruption.

Discussion

12.	Plzz... solve it for 20 points its urgent...
Answer» Answer: a) JOULES law b)720000Joules c)the VOLTAGE will also increase d) other MODES are radiation, conduction

12.

Plzz... solve it for 20 points its urgent...

Answer»

Answer:

a) JOULES law

b)720000Joules

c)the VOLTAGE will also increase

d) other MODES are radiation, conduction

Discussion

13.	Label third oneand explain all
Answer» Explanation: 1 stopper 2 double WALLED GLASS vessel 4 OUTER case 5 vacuum 3 I don't know

13.

Label third oneand explain all

Answer»

Explanation:

1 stopper

2 double WALLED GLASS vessel

4 OUTER case

5 vacuum

3 I don't know

Discussion

14.	Can anyone please explain me how a.w.cos.w.t came????(SHM) ossiclation chapter of class 11
Answer» QUESTION :- How did this CAME ? $\to \bf if \: \sf \: x = \: a \sin( \omega \: t) \\ \\ \to \sf \: v = a \omega \cos( \omega \: t)$ Explanation :- $\bf \: here \\ \\ \to \sf v = velocity \: \\ \to \sf \omega = angular \: frequency \\ \to \sf \: x = displacement \\ \to\sf a = amplitude \:$ We have , $\to \sf x = \: a \sin ( \omega \: t) \\ \\ \sf \: differentiate \: with \: respect \: to \: t \: \\ \\ \to \sf \frac{dx}{dt} = \dfrac{d}{dt} a \sin ( \omega \: t) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \boxed{ \because \sf \frac{d}{dx} \sin x = \cos x} \\ \therefore \\ \\ \to \sf \frac{dx}{dt} = a \cos( \omega \: t) \frac{d}{dt} \omega t \\ \: \\ \sf \red{ here \: \: a \: and \: } \green{ \omega \: are \: constant \: } \\ \\ \: \: \: \: \: \: \: \: \boxed{ \sf \because \frac{d}{dt} x = 1} \\ \therefore \\$ $\to \sf \: \frac{dx}{dt} = a \: \omega \: t \cos ( \omega \: t) \\ \\ \boxed{ \because \sf \frac{dx}{dt} = v \: } \\ \\ \to \red{ \boxed{ \sf \green{v = a \: \omega \cos( \omega \: t)}}}$

14.

Can anyone please explain me how a.w.cos.w.t came????(SHM) ossiclation chapter of class 11

Answer»

QUESTION :-

How did this CAME ?

$\to \bf if \: \sf \: x = \: a \sin( \omega \: t) \\ \\ \to \sf \: v = a \omega \cos( \omega \: t)$

Explanation :-

$\bf \: here \\ \\ \to \sf v = velocity \: \\ \to \sf \omega = angular \: frequency \\ \to \sf \: x = displacement \\ \to\sf a = amplitude \:$

We have ,

$\to \sf x = \: a \sin ( \omega \: t) \\ \\ \sf \: differentiate \: with \: respect \: to \: t \: \\ \\ \to \sf \frac{dx}{dt} = \dfrac{d}{dt} a \sin ( \omega \: t) \\ \\ \: \: \: \: \: \: \: \: \: \: \: \boxed{ \because \sf \frac{d}{dx} \sin x = \cos x} \\ \therefore \\ \\ \to \sf \frac{dx}{dt} = a \cos( \omega \: t) \frac{d}{dt} \omega t \\ \: \\ \sf \red{ here \: \: a \: and \: } \green{ \omega \: are \: constant \: } \\ \\ \: \: \: \: \: \: \: \: \boxed{ \sf \because \frac{d}{dt} x = 1} \\ \therefore \\$

$\to \sf \: \frac{dx}{dt} = a \: \omega \: t \cos ( \omega \: t) \\ \\ \boxed{ \because \sf \frac{dx}{dt} = v \: } \\ \\ \to \red{ \boxed{ \sf \green{v = a \: \omega \cos( \omega \: t)}}}$

Discussion

15.	Use of dimensional analysis
Answer» Answer: $\huge\mathcal\red{\boxed{\boxed{<klux>DIMENSIONAL</klux>\:<klux>ANALYSIS</klux>}}}$ We use dimensional analysis for THREE prominent reasons, they are: Consistency of a dimensional equation. Derive relation between physical QUANTITIES in physical phenomena. To change UNITS from one system to another. ❤️❤️

15.

Use of dimensional analysis

Answer»

Answer:

$\huge\mathcal\red{\boxed{\boxed{<klux>DIMENSIONAL</klux>\:<klux>ANALYSIS</klux>}}}$

We use dimensional analysis for THREE prominent reasons, they are: Consistency of a dimensional equation. Derive relation between physical QUANTITIES in physical phenomena. To change UNITS from one system to another.

❤️❤️

Discussion

16.	The correct relation between linear velocity v and angular velocity wof a particle is
Answer» EXPLANATION: V= wr this is the CORRECT RELATIONSHIP

16.

The correct relation between linear velocity v and angular velocity wof a particle is

Answer»

EXPLANATION:

V= wr

this is the CORRECT RELATIONSHIP

Discussion

17.	Three resistance 12 ohm and 6 ohm and 3 are connected in parallel the total resistance is
Answer» ANSWER:I THINK 1.7ohm Explanation:

17.

Three resistance 12 ohm and 6 ohm and 3 are connected in parallel the total resistance is

Answer»

ANSWER:I THINK 1.7ohm

Explanation:

Discussion

18.	Perspective projection is third angle or first angle
Answer» Explanation: To get the first ANGLE projection, the object is placed in the first quadrant meaning it's placed between the plane of projection and the OBSERVER. For the THIRD angle projection, the object is placed below and BEHIND the viewing PLANES meaning the plane of projection is between the observer and the object.

18.

Perspective projection is third angle or first angle

Answer»

Explanation:

To get the first ANGLE projection, the object is placed in the first quadrant meaning it's placed between the plane of projection and the OBSERVER. For the THIRD angle projection, the object is placed below and BEHIND the viewing PLANES meaning the plane of projection is between the observer and the object.

Discussion

19.	Plzz answer fast i have exam tomorrow
Answer» BEST of LUCK for your EXAM

Discussion

20.	Good eveningWhat do you mean by conventional current? Why does the current travel from positive to negative as protons are heavy and remain fixed in their position so how does the current can travel from positive to negative? Improper answer will be reported so think before answerʕ•ٹ•ʔ
Answer» Answer: onventional DIRECTION of current is taken as the direction of flow of positive charges. Even thoguh positive charges (protons) are heavy and they can't move, electrons, namely valence electrons of atoms, GET DETACHED easily from the atoms . They move from negative to positive as electrons are negatively charged. Now, conventional direction of current is direction of flow of positive charge. Logically, direction of flow of positive charge is opposite to the direction of flow of negative charge. Thus, current CONVENTIONALLY travels from positive to negative. Hope it HELPS!!!

20.

Good eveningWhat do you mean by conventional current? Why does the current travel from positive to negative as protons are heavy and remain fixed in their position so how does the current can travel from positive to negative? Improper answer will be reported so think before answerʕ•ٹ•ʔ

Answer»

Answer:

onventional DIRECTION of current is taken as the direction of flow of positive charges.

Even thoguh positive charges (protons) are heavy and they can't move, electrons, namely valence electrons of atoms, GET DETACHED easily from the atoms .

They move from negative to positive as electrons are negatively charged.

Now, conventional direction of current is direction of flow of positive charge.

Logically, direction of flow of positive charge is opposite to the direction of flow of negative charge.

Thus, current CONVENTIONALLY travels from positive to negative.

Hope it HELPS!!!

Discussion

21.	What is delocalisation and what is the difference between current and voltagePlease answer correctly NO SPAMMING
Answer» HmmDelocalisation??See there are DIFFERENT meanings of Delocalisation in different fields but I THINK most probably u are talking about chem.. Basically it happens when electric charge is spread over more than one atom.It brings more stability to the atom.. idont KNOW much about it as it is a concept of 11 or 12.. Coming to ur next question...What how can we differentiate btw current and voltage.. but ok Current is the rate of electric charge flowing through a point.. it's SI UNIT is Ampere..And Voltage of course is the difference between the amount of charges btw two pts.Si unit VOLT Huh my longest answerrrr.. I know that u will mark me brainliest, that's why I write on ur question:);)

21.

What is delocalisation and what is the difference between current and voltagePlease answer correctly NO SPAMMING

Answer»

HmmDelocalisation??See there are DIFFERENT meanings of Delocalisation in different fields but I THINK most probably u are talking about chem.. Basically it happens when electric charge is spread over more than one atom.It brings more stability to the atom.. idont KNOW much about it as it is a concept of 11 or 12.. Coming to ur next question...What how can we differentiate btw current and voltage.. but ok Current is the rate of electric charge flowing through a point.. it's SI UNIT is Ampere..And Voltage of course is the difference between the amount of charges btw two pts.Si unit VOLT

Huh my longest answerrrr..

I know that u will mark me brainliest, that's why I write on ur question:);)

Discussion

22.	(x)Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (8) (8) (1)(R=8-314 JK 'mol-')(a) + 4.988 kJ(b) - 4.988 kJ6 - 49.88 kJ(d) + 49.88 kJpage 3
Answer» ANSWER:its be will be B EXPLANATION:

22.

(x)Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (8) (8) (1)(R=8-314 JK 'mol-')(a) + 4.988 kJ(b) - 4.988 kJ6 - 49.88 kJ(d) + 49.88 kJpage 3

Answer»

ANSWER:its be will be B

EXPLANATION:

Discussion

23.	Oxidation : increase in positive charge of an atom :: .............: decrease in positive charge of an atom
Answer» ANSWER: REDUCTION......,.............

23.

Oxidation : increase in positive charge of an atom :: .............: decrease in positive charge of an atom

Answer»

ANSWER:

REDUCTION......,.............

Discussion

24.	What are renewable resources of energy and name them
Answer» Answer: Some examples of renewable energy sources are solar energy, WIND energy, HYDROPOWER, geothermal energy, and BIOMASS energy. These types of energy sources are different from FOSSIL fuels, such as coal, OIL, and natural gas.

24.

What are renewable resources of energy and name them

Answer»

Answer:

Some examples of renewable energy sources are solar energy, WIND energy, HYDROPOWER, geothermal energy, and BIOMASS energy. These types of energy sources are different from FOSSIL fuels, such as coal, OIL, and natural gas.

Discussion

25.	What are the different methods of remote sensing? Explain them.
Answer» Answer: SATELLITE , personal COMMUNICATION , MASS communication ,remote SENSING satellite

25.

What are the different methods of remote sensing? Explain them.

Answer»

Answer:

SATELLITE , personal COMMUNICATION , MASS communication ,remote SENSING satellite

Discussion

26.	(ii) Name the vibrations used in SONAR.
Answer» ANSWER: sound waves The vibrations used in SONAR is sound waves. It is like an ECHO. The sound waves (vibrations) hit the object and comeback like an echo does. This helps us to detect the interference of DIFFERENT OBJECTS in our path Explanation:

26.

(ii) Name the vibrations used in SONAR.

Answer»

ANSWER: sound waves

The vibrations used in SONAR is sound waves. It is like an ECHO. The sound waves (vibrations) hit the object and comeback like an echo does. This helps us to detect the interference of DIFFERENT OBJECTS in our path

Explanation:

Discussion

27.	What are open circulatory system
Answer» Explanation: OPEN circulatory systems are systems where blood, RATHER than being sealed TIGHT in arteries and veins, suffeses the body and may be directly to the environment at places such as the DIGESTIVE TRACT.

27.

What are open circulatory system

Answer»

Explanation:

OPEN circulatory systems are systems where blood, RATHER than being sealed TIGHT in arteries and veins, suffeses the body and may be directly to the environment at places such as the DIGESTIVE TRACT.

Discussion

28.	The work function of a photosensitive material is4.0 eV. The longest wavelength of light that cancause photon emission from the substance is(approximately)[NEET - 2019 (Odisha)](1) 310 nm(2) 3100 nm(3) 966 nm(4) 31 nm
Answer» answer : option (1) 310 nm work function of a photosensitive material is 4 eV. we know, 1eV = 1.6 × 10^-19 J so, work function = 4 × 1.6 × 10^-19 J LET's FIND threshold wavelength, work function, Φ = hc/λ ⇒4 × 1.6 × 10^-19 J = 6.625 × 10^-34 × 3 × 10^8/λ ⇒λ = (6.625 × 3 × 10^-26)/(6.4 × 10^-19) ⇒ λ = 3.1 × 10^-7 m = 310 nm for emission of photons from metal surface, wavelength must be less than or equal to threshold wavelength. hence, maximum wavelength = threshold wavelength = 310 nm also read similar questions : The work function of sodium metal is 2.28 eV. The APPROXIMATE value of longest wavelength (in angstrom) which can result... brainly.in/question/4344890 The ground state energy of hydrogen atom is -13.6eV. The photon emitted during the transition of electron from n = 2 to ... brainly.in/question/8267110

28.

The work function of a photosensitive material is4.0 eV. The longest wavelength of light that cancause photon emission from the substance is(approximately)[NEET - 2019 (Odisha)](1) 310 nm(2) 3100 nm(3) 966 nm(4) 31 nm

Answer»

answer : option (1) 310 nm

work function of a photosensitive material is 4 eV.

we know, 1eV = 1.6 × 10^-19 J

so, work function = 4 × 1.6 × 10^-19 J

LET's FIND threshold wavelength,

work function, Φ = hc/λ

⇒4 × 1.6 × 10^-19 J = 6.625 × 10^-34 × 3 × 10^8/λ

⇒λ = (6.625 × 3 × 10^-26)/(6.4 × 10^-19)

⇒ λ = 3.1 × 10^-7 m = 310 nm

for emission of photons from metal surface, wavelength must be less than or equal to threshold wavelength.

hence, maximum wavelength = threshold wavelength = 310 nm

also read similar questions : The work function of sodium metal is 2.28 eV. The APPROXIMATE value of longest wavelength (in angstrom) which can result...

brainly.in/question/4344890

The ground state energy of hydrogen atom is -13.6eV. The photon emitted during the transition of electron from n = 2 to ...

brainly.in/question/8267110

Discussion

29.	Hello friends my 12th preliminary exam marks1) physics - 100/100 2) mathematics-89/1003) chemistry-96/100 this real marks of my Prelims exam can you guess or make my dream marksheet according to get marks of my board examination
Answer» Only you can GUESS that or GOD

Discussion

30.	A person of mass 40kg picked up a bag of Mangoes Each of Mass 0.5kg he is climbing 10 Steps . Each step is 10 Bag contain 10 mangoes Work done by the person in carrying a bag till 10th step.
Answer» ANSWER: AMAZON RIVER

30.

A person of mass 40kg picked up a bag of Mangoes Each of Mass 0.5kg he is climbing 10 Steps . Each step is 10 Bag contain 10 mangoes Work done by the person in carrying a bag till 10th step.

Answer»

ANSWER: AMAZON RIVER

Discussion

31.	Which is the largest river in terms of volume of water ????
Answer» Answer: Amazon River The Amazon River is 3,980 miles (6,400 KILOMETERS) long, ACCORDING to the U.S. National Park Service. It is, HOWEVER, the WORLD's largest river by volume and contains 20 percent of the Earth's fresh water. hope..it.helps,... MARK..me..brainliest..

31.

Which is the largest river in terms of volume of water ????

Answer»

Answer:

Amazon River

The Amazon River is 3,980 miles (6,400 KILOMETERS) long, ACCORDING to the U.S. National Park Service.

It is, HOWEVER, the WORLD's largest river by volume and contains 20 percent of the Earth's fresh water.

hope..it.helps,...

MARK..me..brainliest..

Discussion

32.	a powerful motorcycle can accelerate from rest to 28m/s in only 4 second .(a) what is the average acceleration ?(b) how far does it travel in that time ?
Answer» ANSWER: sorrrry i DONT know Explanation:

32.

a powerful motorcycle can accelerate from rest to 28m/s in only 4 second .(a) what is the average acceleration ?(b) how far does it travel in that time ?

Answer»

ANSWER:

sorrrry i DONT know

Explanation:

Discussion

33.	Using a 50-50 mixture of deuterium and tritium scientists at Princeton university in usa have produced a world record setting burst of fusion energy equivalent to three million watts (3×10^6W)of power on December 10,1997.The power output in this experiment lasted only for 4 seconds.The princeton group expects to increase the power of its reactor to 10 million watts very soon.This raises the prospects for abundant and cheap electrical power in future.QUESTIONS:(i)calculate the amount of energy in joules produced in the experiment explained in the passage.(ii)under what condition of pressure and temperature does the above process take place.
Answer» Answer: Part i) Total energy released is $E = 12 \times 10^6 J$ Part ii) This is the reaction in which it releases large energy so this is under the condition of high PRESSURE and high temperature Explanation: Part i) As we know that the POWER produced in the reactor is $P = 3 \times 10^6 W$ the power LASTED for t = 4 s now we know that Energy = (power)(time) so we have $E = 3\times 10^6 \times 4$ $E = 12 \times 10^6 J$ Part ii) This is the reaction in which it releases large energy so this is under the condition of high pressure and high temperature #Learn Topic : Energy and Power brainly.in/question/15334473

33.

Using a 50-50 mixture of deuterium and tritium scientists at Princeton university in usa have produced a world record setting burst of fusion energy equivalent to three million watts (3×10^6W)of power on December 10,1997.The power output in this experiment lasted only for 4 seconds.The princeton group expects to increase the power of its reactor to 10 million watts very soon.This raises the prospects for abundant and cheap electrical power in future.QUESTIONS:(i)calculate the amount of energy in joules produced in the experiment explained in the passage.(ii)under what condition of pressure and temperature does the above process take place.

Answer»

Answer:

Part i)

Total energy released is

$E = 12 \times 10^6 J$

Part ii)

This is the reaction in which it releases large energy so this is under the condition of high PRESSURE and high temperature

Explanation:

Part i)

As we know that the POWER produced in the reactor is

$P = 3 \times 10^6 W$

the power LASTED for t = 4 s

now we know that

Energy = (power)(time)

so we have

$E = 3\times 10^6 \times 4$

$E = 12 \times 10^6 J$

Part ii)

This is the reaction in which it releases large energy so this is under the condition of high pressure and high temperature

#Learn

Topic : Energy and Power

brainly.in/question/15334473

Discussion

34.	A person of mass 40kg picked up abag of Mangoes Each of Mass 0.5kghe is climbing 10 Steps . Each stepis 10 Bag contain 10 mangoes Workdone by the person in carrying a bag till10th step.
Answer» ANSWER:sorrrry i DONT know Explanation:

34.

A person of mass 40kg picked up abag of Mangoes Each of Mass 0.5kghe is climbing 10 Steps . Each stepis 10 Bag contain 10 mangoes Workdone by the person in carrying a bag till10th step.

Answer»

ANSWER:sorrrry i DONT know

Explanation:

Discussion

35.	Example of ship of archimedes principle
Answer» ANSWER: OIL floats in WATER because oil has LOW density

35.

Example of ship of archimedes principle

Answer»

ANSWER:

OIL floats in WATER because oil has LOW density

Discussion

36.	A beaker of mass 1 kg contains 2 kg of water and rests on ascale. A 2 kg block of Aluminium (specific gravity 2.70) suspended froma spring scale is submerged in water, as shown in figure, then1)The reading of lower scale is 36.66N2) The reading of lower scale is 26.66N3) The reading of upper scale is 12.34N4) both 1 & 3 are correct
Answer» Answer: A BEAKER of mass 1 kg contains 2 kg of water and rests on a Explanation: A beaker of mass 1 kg contains 2 kg of water and rests on a SCALE. A 2 kg block of Aluminium (specific gravity 2.70) suspended from a spring scale is submerged in water, as SHOWN in figure, then 1)The reading of lower scale is 36.66N 2) The reading of lower scale is 26.66N 3) The reading of UPPER scale is 12.34N 4) both 1 & 3 are correct

36.

A beaker of mass 1 kg contains 2 kg of water and rests on ascale. A 2 kg block of Aluminium (specific gravity 2.70) suspended froma spring scale is submerged in water, as shown in figure, then1)The reading of lower scale is 36.66N2) The reading of lower scale is 26.66N3) The reading of upper scale is 12.34N4) both 1 & 3 are correct

Answer»

Answer:

A BEAKER of mass 1 kg contains 2 kg of water and rests on a

Explanation:

A beaker of mass 1 kg contains 2 kg of water and rests on a

SCALE. A 2 kg block of Aluminium (specific gravity 2.70) suspended from

a spring scale is submerged in water, as SHOWN in figure, then

1)The reading of lower scale is 36.66N

2) The reading of lower scale is 26.66N

3) The reading of UPPER scale is 12.34N

4) both 1 & 3 are correct

Discussion

37.	Where Los Angeles is located ????
Answer» AMERICA ( US) . . .............

37.

Where Los Angeles is located ????

Answer»

AMERICA ( US)

.

.............

Discussion

38.	3 lines example of archimedes principle
Answer» ANSWER: If you put an ice cube in a GLASS of WATER, the cube floats because ice is less DENSE than water. So, the ice underwater displaces that volume of water.

38.

3 lines example of archimedes principle

Answer»

ANSWER:

If you put an ice cube in a GLASS of WATER, the cube floats because ice is less DENSE than water. So, the ice underwater displaces that volume of water.

Discussion

39.	the direction of magnetic field is considered to be the direction in which _______ of the compass moves inside it .
Answer» ANSWER: NEEDLE..... EXPLANATION:

39.

the direction of magnetic field is considered to be the direction in which _______ of the compass moves inside it .

Answer»

ANSWER:

NEEDLE.....

EXPLANATION:

Discussion

40.	Describe the process of making of an advertisement !!!!
Answer» EXPLANATION: Here are the most IMPORTANT STEPS you need to undertake: The SWOT ANALYSIS of the product and the company. Set up your main objectives. Research the market, the competition, your audience. Identify your target audience. Select your channels. Brainstorm for fresh ideas. The design process. Deliver your advertisements.

40.

Describe the process of making of an advertisement !!!!

Answer»

EXPLANATION:

Here are the most IMPORTANT STEPS you need to undertake:

The SWOT ANALYSIS of the product and the company.

Set up your main objectives.

Research the market, the competition, your audience.

Identify your target audience.

Select your channels.

Brainstorm for fresh ideas.

The design process.

Deliver your advertisements.

Discussion

41.	Zener diode as a voltage regulator
Answer» Answer: Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage ACROSS small CIRCUITS. When CONNECTED in parallel with a VARIABLE voltage source so that it is reverse biased, a Zener DIODE conducts when the voltage reaches the diode's reverse breakdown voltage.

41.

Zener diode as a voltage regulator

Answer»

Answer:

Zener diodes are widely used as voltage references and as shunt regulators to regulate the voltage ACROSS small CIRCUITS. When CONNECTED in parallel with a VARIABLE voltage source so that it is reverse biased, a Zener DIODE conducts when the voltage reaches the diode's reverse breakdown voltage.

Discussion

42.	the speed of sound in water is 15 metre per second how far away from an undersea rocks should a deep sea diver big so that he can hear his own Eco
Answer» ANSWER: SORRY i DONT know Explanation:

42.

the speed of sound in water is 15 metre per second how far away from an undersea rocks should a deep sea diver big so that he can hear his own Eco

Answer»

ANSWER:

SORRY i DONT know

Explanation:

Discussion

43.	Example of archimedes principle
Answer» Boats and ships float on the surface of the WATER are the examples of the Archimedes PRINCIPLE. Ships WORK on the principle of flotation.

43.

Example of archimedes principle

Answer»

Boats and ships float on the surface of the WATER are the examples of the Archimedes PRINCIPLE. Ships WORK on the principle of flotation.

Discussion

44.	Calculate the molecular mass of the following(1) C,H,OH(ii) H2SO4Given atomic mass : O=16u, H=lu, C=12u, S=32u
Answer» Answer: 1) 12 + 1 + 16 + 1 = 30 u 2) 2 + 32 + 4 × 16 = 98 u *HOPE* *THIS* *HELPS* *YOU*.......

44.

Calculate the molecular mass of the following(1) C,H,OH(ii) H2SO4Given atomic mass : O=16u, H=lu, C=12u, S=32u

Answer»

Answer:

1) 12 + 1 + 16 + 1 = 30 u

2) 2 + 32 + 4 × 16 = 98 u

HOPE THIS HELPS YOU.......

Discussion

45.	3. Charges of -2x 10-10 C, 2x 10-10 C and 4x 10-10 C are placed at the corners A, B and D ofa square of side 2m. Calculate the resultant electric field at the centre of the square.
Answer» INDICATE the FOLLOWING TERMS related to sperical Explanation: you must used following terms

45.

3. Charges of -2x 10-10 C, 2x 10-10 C and 4x 10-10 C are placed at the corners A, B and D ofa square of side 2m. Calculate the resultant electric field at the centre of the square.

Answer»

INDICATE the FOLLOWING TERMS related to sperical

Explanation:

you must used following terms

Discussion

46.	7.3 A 12 wedge is pushed inside a gap in between two blocks by a vertical force P as shown inFig. 1.7.3. Determine the value of P to just move the 1000 kg block to the left. Also, determinethe value of W to maintain equilibrium. The coefficient of friction at all contact surfaces is 0.25
Answer» ANSWER: patah NHI Explanation: KYUKI patah nhi

46.

7.3 A 12 wedge is pushed inside a gap in between two blocks by a vertical force P as shown inFig. 1.7.3. Determine the value of P to just move the 1000 kg block to the left. Also, determinethe value of W to maintain equilibrium. The coefficient of friction at all contact surfaces is 0.25

Answer»

ANSWER:

patah NHI

Explanation:

KYUKI patah nhi

Discussion

47.	व्हाट इज टिंडाल इफेक्ट गिव इट्स 3 एग्जांपल्स
Answer» Explanation: The TYNDALL effect is the SCATTERING of LIGHT as a light beam PASSES through a colloid.

47.

व्हाट इज टिंडाल इफेक्ट गिव इट्स 3 एग्जांपल्स

Answer»

Explanation:

The TYNDALL effect is the SCATTERING of LIGHT as a light beam PASSES through a colloid.

Discussion

48.	If the vertical trace of a line Lise 30mm above reference line than its position will be
Answer» EXPLANATION: Kepler-452b (a planet SOMETIMES quoted to be an Earth 2.0 or Earth's COUSIN based on its characteristics; also known by its Kepler Object of INTEREST designation KOI-7016.01) is an exoplanet orbiting the Sun-like STAR Kepler-452 about 1,402 light-years (430 pc) from Earth in the constellation Cygnus.

48.

If the vertical trace of a line Lise 30mm above reference line than its position will be

Answer»

EXPLANATION:

Kepler-452b (a planet SOMETIMES quoted to be an Earth 2.0 or Earth's COUSIN based on its characteristics; also known by its Kepler Object of INTEREST designation KOI-7016.01) is an exoplanet orbiting the Sun-like STAR Kepler-452 about 1,402 light-years (430 pc) from Earth in the constellation Cygnus.

Discussion

49.	(b) if the speed of light in vacuum is 3 x 10 m/s. Find the absolute refractiveindex of a medium in which light travels with a speed of 1.4 x 108 m/s.daharacteristics of the image formed by a plane mirror
Answer» Answer: Laws of refraction of LIGHT: First LAW: The incident ray, the REFRACTED ray, and the normal at the point of INCIDENCE all lie in the same plane. Second law (Snell’s law): The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for a GIVEN pair of media. hope..it..helps... ,..mark..me..brainliest...

49.

(b) if the speed of light in vacuum is 3 x 10 m/s. Find the absolute refractiveindex of a medium in which light travels with a speed of 1.4 x 108 m/s.daharacteristics of the image formed by a plane mirror

Answer»

Answer:

Laws of refraction of LIGHT:

First LAW: The incident ray, the REFRACTED ray, and the normal at the point of INCIDENCE all lie in the same plane.

Second law (Snell’s law): The ratio of sine of angle of incidence to the sine of angle of refraction is a constant for a GIVEN pair of media.

hope..it..helps...

,..mark..me..brainliest...

Discussion

50.	. If you exert a force of 80ON, and the object moves 10 meters, how much work didyou do?
Answer» we KNOW WORK = FORCE × DISPLACEMENT = 800×10 = 8000J

50.

. If you exert a force of 80ON, and the object moves 10 meters, how much work didyou do?

Answer»

we KNOW

WORK = FORCE × DISPLACEMENT

= 800×10 = 8000J

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What is the practical application of magnet​

Water expand on reducing it's temperature below ..........°C

cause of water pollution.. ❤​

causes of WATER pollution:

(¯`·.¸¸.·´¯`·.¸¸.-> hope it help <-.¸¸.·´¯`·.¸¸.·´¯)

Oct option in each of the followthe correct dimensional formula- || || (b) (MI | | |(c) mass, time and velocityI dy is the error in the measurement of(a) .100%anyc)100idiThe numerical value of one newton into dyne isay 10(b) 101(cITP + 0 = Rand + 0 = R. Then the at​

List out the materials to find the relative density of the liquid​

An electron in the hydrogen atom jumps from excitedstate n to the ground state. The wavelength soemitted illuminates a photosensitive material havingwork function 12.75 eV If the stopping potential ofthe photoelectron is 10 V, then the value of n isTAIPMT (Mains)-2011)(1) 5(2) 2(3) 3(4) 4​

Write Archimedos pascal's principles​

Define least count of a vernier caliper?how do you determine it?​

an aeroplane on a Runway starts from rest and picks up a velocity of 180 km/hour and takes off. In doing so, it covers a Runway of 1.5 km. calculate (i) the uniform acceleration acting on the aeroplane and (ii) the time in which it takes off.​

State which of the following situations are possible and gives an example for each of these :(a) an object moving with an acceleration in the perpendicular direction . (b) an object moving in certain direction with an acceleration in the perpendicular direction​

What causes volcanic eruptions ?????​

Plzz... solve it for 20 points its urgent...​

Label third oneand explain all​

Can anyone please explain me how a.w.cos.w.t came????(SHM) ossiclation chapter of class 11​

QUESTION :-

Explanation :-

Use of dimensional analysis​

❤️❤️

The correct relation between linear velocity v and angular velocity wof a particle is​

Three resistance 12 ohm and 6 ohm and 3 are connected in parallel the total resistance is​

Perspective projection is third angle or first angle

Plzz answer fast i have exam tomorrow​

Good eveningWhat do you mean by conventional current? Why does the current travel from positive to negative as protons are heavy and remain fixed in their position so how does the current can travel from positive to negative? ​Improper answer will be reported so think before answerʕ•ٹ•ʔ

What is delocalisation and what is the difference between current and voltagePlease answer correctly NO SPAMMING​

(x)Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (8) (8) (1)(R=8-314 JK 'mol-')(a) + 4.988 kJ(b) - 4.988 kJ6 - 49.88 kJ(d) + 49.88 kJpage 3​

Oxidation : increase in positive charge of an atom :: .............: decrease in positive charge of an atom​

What are renewable resources of energy and name them​

What are the different methods of remote sensing? Explain them.

(ii) Name the vibrations used in SONAR.​

What are open circulatory system​

The work function of a photosensitive material is4.0 eV. The longest wavelength of light that cancause photon emission from the substance is(approximately)[NEET - 2019 (Odisha)](1) 310 nm(2) 3100 nm(3) 966 nm(4) 31 nm

answer : option (1) 310 nm

Hello friends my 12th preliminary exam marks1) physics - 100/100 2) mathematics-89/1003) chemistry-96/100 this real marks of my Prelims exam can you guess or make my dream marksheet according to get marks of my board examination ​

A person of mass 40kg picked up a bag of Mangoes Each of Mass 0.5kg he is climbing 10 Steps . Each step is 10 Bag contain 10 mangoes Work done by the person in carrying a bag till 10th step.

Which is the largest river in terms of volume of water ????​

Amazon River

a powerful motorcycle can accelerate from rest to 28m/s in only 4 second .(a) what is the average acceleration ?(b) how far does it travel in that time ?​

Part i)

Total energy released is

Part ii)

This is the reaction in which it releases large energy so this is under the condition of high PRESSURE and high temperature

A person of mass 40kg picked up abag of Mangoes Each of Mass 0.5kghe is climbing 10 Steps . Each stepis 10 Bag contain 10 mangoes Workdone by the person in carrying a bag till10th step.​

Example of ship of archimedes principle​

Where Los Angeles is located ????​

3 lines example of archimedes principle​

the direction of magnetic field is considered to be the direction in which _______ of the compass moves inside it .​

Describe the process of making of an advertisement !!!!​

Zener diode as a voltage regulator​

the speed of sound in water is 15 metre per second how far away from an undersea rocks should a deep sea diver big so that he can hear his own Eco​

Example of archimedes principle​

Calculate the molecular mass of the following(1) C,H,OH(ii) H2SO4Given atomic mass : O=16u, H=lu, C=12u, S=32u​

3. Charges of -2x 10-10 C, 2x 10-10 C and 4x 10-10 C are placed at the corners A, B and D ofa square of side 2m. Calculate the resultant electric field at the centre of the square.​

7.3 A 12 wedge is pushed inside a gap in between two blocks by a vertical force P as shown inFig. 1.7.3. Determine the value of P to just move the 1000 kg block to the left. Also, determinethe value of W to maintain equilibrium. The coefficient of friction at all contact surfaces is 0.25​

व्हाट इज टिंडाल इफेक्ट गिव इट्स 3 एग्जांपल्स

The TYNDALL effect is the SCATTERING of LIGHT as a light beam PASSES through a colloid.

If the vertical trace of a line Lise 30mm above reference line than its position will be

(b) if the speed of light in vacuum is 3 x 10 m/s. Find the absolute refractiveindex of a medium in which light travels with a speed of 1.4 x 108 m/s.daharacteristics of the image formed by a plane mirror​

. If you exert a force of 80ON, and the object moves 10 meters, how much work didyou do?​

What is the practical application of magnet

cause of water pollution.. ❤

Oct option in each of the followthe correct dimensional formula- || || (b) (MI | | |(c) mass, time and velocityI dy is the error in the measurement of(a) .100%anyc)100idiThe numerical value of one newton into dyne isay 10(b) 101(cITP + 0 = Rand + 0 = R. Then the at

List out the materials to find the relative density of the liquid

An electron in the hydrogen atom jumps from excitedstate n to the ground state. The wavelength soemitted illuminates a photosensitive material havingwork function 12.75 eV If the stopping potential ofthe photoelectron is 10 V, then the value of n isTAIPMT (Mains)-2011)(1) 5(2) 2(3) 3(4) 4

Write Archimedos pascal's principles

Define least count of a vernier caliper?how do you determine it?

an aeroplane on a Runway starts from rest and picks up a velocity of 180 km/hour and takes off. In doing so, it covers a Runway of 1.5 km. calculate (i) the uniform acceleration acting on the aeroplane and (ii) the time in which it takes off.

State which of the following situations are possible and gives an example for each of these :(a) an object moving with an acceleration in the perpendicular direction . (b) an object moving in certain direction with an acceleration in the perpendicular direction

What causes volcanic eruptions ?????

Plzz... solve it for 20 points its urgent...

Label third oneand explain all

Can anyone please explain me how a.w.cos.w.t came????(SHM) ossiclation chapter of class 11

Use of dimensional analysis

The correct relation between linear velocity v and angular velocity wof a particle is

Three resistance 12 ohm and 6 ohm and 3 are connected in parallel the total resistance is

Plzz answer fast i have exam tomorrow

Good eveningWhat do you mean by conventional current? Why does the current travel from positive to negative as protons are heavy and remain fixed in their position so how does the current can travel from positive to negative? Improper answer will be reported so think before answerʕ•ٹ•ʔ

What is delocalisation and what is the difference between current and voltagePlease answer correctly NO SPAMMING

(x)Calculate the work done during the reaction represented bythe following thermochemical equation at 300 K:CH4 +202 → CO2 + 2H2O(g) (8) (8) (1)(R=8-314 JK 'mol-')(a) + 4.988 kJ(b) - 4.988 kJ6 - 49.88 kJ(d) + 49.88 kJpage 3

Oxidation : increase in positive charge of an atom :: .............: decrease in positive charge of an atom

What are renewable resources of energy and name them

(ii) Name the vibrations used in SONAR.

What are open circulatory system

Hello friends my 12th preliminary exam marks1) physics - 100/100 2) mathematics-89/1003) chemistry-96/100 this real marks of my Prelims exam can you guess or make my dream marksheet according to get marks of my board examination

Which is the largest river in terms of volume of water ????

a powerful motorcycle can accelerate from rest to 28m/s in only 4 second .(a) what is the average acceleration ?(b) how far does it travel in that time ?

A person of mass 40kg picked up abag of Mangoes Each of Mass 0.5kghe is climbing 10 Steps . Each stepis 10 Bag contain 10 mangoes Workdone by the person in carrying a bag till10th step.

Example of ship of archimedes principle

Where Los Angeles is located ????

3 lines example of archimedes principle

the direction of magnetic field is considered to be the direction in which _______ of the compass moves inside it .

Describe the process of making of an advertisement !!!!

Zener diode as a voltage regulator

the speed of sound in water is 15 metre per second how far away from an undersea rocks should a deep sea diver big so that he can hear his own Eco

Example of archimedes principle

Calculate the molecular mass of the following(1) C,H,OH(ii) H2SO4Given atomic mass : O=16u, H=lu, C=12u, S=32u

3. Charges of -2x 10-10 C, 2x 10-10 C and 4x 10-10 C are placed at the corners A, B and D ofa square of side 2m. Calculate the resultant electric field at the centre of the square.

7.3 A 12 wedge is pushed inside a gap in between two blocks by a vertical force P as shown inFig. 1.7.3. Determine the value of P to just move the 1000 kg block to the left. Also, determinethe value of W to maintain equilibrium. The coefficient of friction at all contact surfaces is 0.25

(b) if the speed of light in vacuum is 3 x 10 m/s. Find the absolute refractiveindex of a medium in which light travels with a speed of 1.4 x 108 m/s.daharacteristics of the image formed by a plane mirror

. If you exert a force of 80ON, and the object moves 10 meters, how much work didyou do?