67486 + Interview Questions in Secondary School in Physics

1.	three resistors of 6 ohm 3 ohm to ohm are connected in parallel this combination process connected to another resistor of 4 ohm and to spell of 1.5 ohm draw circuit diagram and calculate the current drawn from the cell
Answer» To find current POTENTIAL DIFF is to be provided ... REWRITE your question

1.

three resistors of 6 ohm 3 ohm to ohm are connected in parallel this combination process connected to another resistor of 4 ohm and to spell of 1.5 ohm draw circuit diagram and calculate the current drawn from the cell

Answer»

To find current POTENTIAL DIFF is to be provided ...

REWRITE your question

Discussion

2.	If the electron of hydrogen atom takes 3.2*10^-17 sec to complete one revolution, then how much current is consituted
Answer» $\huge\underline{\underline{\bf \orange{Question-}}}$ If the ELECTRON of HYDROGEN atom takes ${\sf 3.2×10^{-17}\:sec}$ to complete ONE revolution, then how much CURRENT is consituted $\huge\underline{\underline{\bf \orange{Solution-}}}$ $\large{\rm We \: Know \: That - }$ $\large{\boxed{\bf \blue{I = \dfrac{Q}{t}}}}$ t = ${\sf 3.2×10^{-17}\:sec}$ And charge on one electron is ${\sf 1.6×10^{-19}C}$ . So , $\implies{\sf I = \dfrac{1.6×10^{-19}}{3.2×10^{-17}} }$ $\implies{\sf I = 0.5×10^{-19+17} }$ $\implies{\sf I = 0.5×10^{-2}}$ $\implies{\bf \red{Current\:(I )= 5×10^{-3}\:A}}$ $\huge\underline{\underline{\bf \orange{Answer-}}}$ Current is consituted ${\bf \red{Current\:(I )= 5×10^{-3}\:A}}$ .

2.

If the electron of hydrogen atom takes 3.2*10^-17 sec to complete one revolution, then how much current is consituted

Answer»

$\huge\underline{\underline{\bf \orange{Question-}}}$

If the ELECTRON of HYDROGEN atom takes ${\sf 3.2×10^{-17}\:sec}$ to complete ONE revolution, then how much CURRENT is consituted

$\huge\underline{\underline{\bf \orange{Solution-}}}$

$\large{\rm We \: Know \: That - }$

$\large{\boxed{\bf \blue{I = \dfrac{Q}{t}}}}$

t = ${\sf 3.2×10^{-17}\:sec}$

And charge on one electron is ${\sf 1.6×10^{-19}C}$ .

So ,

$\implies{\sf I = \dfrac{1.6×10^{-19}}{3.2×10^{-17}} }$

$\implies{\sf I = 0.5×10^{-19+17} }$

$\implies{\sf I = 0.5×10^{-2}}$

$\implies{\bf \red{Current\:(I )= 5×10^{-3}\:A}}$

$\huge\underline{\underline{\bf \orange{Answer-}}}$

Current is consituted ${\bf \red{Current\:(I )= 5×10^{-3}\:A}}$ .

Discussion

3.	4. Consider a radioactive material of half life1.5 min. If one of the nuclei decays now, the nextone will decay after
Answer» ANSWER: . EXPLANATION:

3.

4. Consider a radioactive material of half life1.5 min. If one of the nuclei decays now, the nextone will decay after

Answer»

ANSWER:

.

EXPLANATION:

Discussion

4.	( ≧Д≦)( ≧Д≦)( ≧Д≦)(´;︵;`)
Answer» ANSWER: Hayy.....KYA ho gaya? MARK as brainliest ✨✨

4.

( ≧Д≦)( ≧Д≦)( ≧Д≦)(´;︵;`)

Answer»

ANSWER:

Hayy.....KYA ho gaya?

MARK as brainliest ✨✨

Discussion

5.	13. The half life of radioactive radon is 3.8 days. Thetime at the end of whichof the radonsample will remain undecayed is(1) 3.8 days(2) 16.5 days19 days(4) 76 days
Answer» Answer: 3.8 days Explanation: I HOPE this MAY HELP you

5.

13. The half life of radioactive radon is 3.8 days. Thetime at the end of whichof the radonsample will remain undecayed is(1) 3.8 days(2) 16.5 days19 days(4) 76 days

Answer»

Answer:

3.8 days

Explanation:

I HOPE this MAY HELP you

Discussion

6.	How do you define a j. E. R. K? Can a body have acceleration without an applied force?
Answer» ANSWER: qetyiodxgweyiczzzvnktsseu

6.

How do you define a j. E. R. K? Can a body have acceleration without an applied force?

Answer»

ANSWER:

qetyiodxgweyiczzzvnktsseu

Discussion

7.	N atom of a radioactive element emit n alphaparticles per second. The half life of the element is
Answer» ANSWER: ACTIVITY = RATE of DECAY Activity = n/1 n/1 = lemda N Lemda = n/N Lemda = 0.693/Th Th = 0.693 × N/n Thanks for READING

7.

N atom of a radioactive element emit n alphaparticles per second. The half life of the element is

Answer»

ANSWER:

ACTIVITY = RATE of DECAY

Activity = n/1

n/1 = lemda N

Lemda = n/N

Lemda = 0.693/Th

Th = 0.693 × N/n

Thanks for READING

Discussion

8.	a stone is thrown vertically upward with an initial velocity of 40 m/s. taking G= 10 m/s^2. find the maximum height reached by the stone . what is the stone net displacement and the total distance covered by the stone ?
Answer» ANSWER: HEIGHT = 80m Displacement = 40M

8.

a stone is thrown vertically upward with an initial velocity of 40 m/s. taking G= 10 m/s^2. find the maximum height reached by the stone . what is the stone net displacement and the total distance covered by the stone ?

Answer»

ANSWER:

HEIGHT = 80m

Displacement = 40M

Discussion

9.	A porter lifts a luggage 15kg from the ground and puts it on his head 1.5m above the ground. Calculate the work done by him on the luggage.
Answer» ANSWER: WORK DONE = FS F=mg s=h work = mgh =15×10×1.5 =225joule mark it as BRAINLIEST THANKYOU

9.

A porter lifts a luggage 15kg from the ground and puts it on his head 1.5m above the ground. Calculate the work done by him on the luggage.

Answer»

ANSWER:

WORK DONE = FS

F=mg

s=h

work = mgh

=15×10×1.5

=225joule

mark it as BRAINLIEST

THANKYOU

Discussion

10.	If v = axy then E is proportional to
Answer» Answer: Explanation: if V = axy then E is PROPORTIONAL TO $r^{2}$

10.

If v = axy then E is proportional to

Answer»

Answer:

Explanation:

if V = axy then E is PROPORTIONAL TO $r^{2}$

Discussion

11.	Where does magnet get its power from
Answer» Answer: A magnetic field pulls and pushes electrons in CERTAIN objects closer to them, making them move. Metals like copper have electrons that are EASILY moved from their orbits. If you move a MAGNET quickly through a COIL of copper wire, the electrons will move - this produces electricity.

11.

Where does magnet get its power from

Answer»

Answer:

A magnetic field pulls and pushes electrons in CERTAIN objects closer to them, making them move. Metals like copper have electrons that are EASILY moved from their orbits. If you move a MAGNET quickly through a COIL of copper wire, the electrons will move - this produces electricity.

Discussion

12.	Example 12.6A wire of given material having length land area of cross-section Ahas a resistance of 4 ohm. What would be the resistance of another wireof the same material having length 1/2 and area of cross-section 2A?
Answer» Answer: here is UR ANS BRO HOPE it hlps

12.

Example 12.6A wire of given material having length land area of cross-section Ahas a resistance of 4 ohm. What would be the resistance of another wireof the same material having length 1/2 and area of cross-section 2A?

Answer»

Answer:

here is UR ANS BRO HOPE it hlps

Discussion

13.	How do we hear sound?
Answer» EXPLANATION: ASLAM alekum❤❤ when the sound vibrates its STRIKE and its particles merge in atmosphere and reach our ears.. HOPE it will help you.mark my answer as brainlist if U like it

13.

How do we hear sound?

Answer»

EXPLANATION:

ASLAM alekum❤❤

when the sound vibrates its STRIKE and its particles merge in atmosphere and reach our ears.. HOPE it will help you.mark my answer as brainlist if U like it

Discussion

14.	Define the term volt
Answer» Answer: I VOLT is referred to the AMOUNT of work DONE in an ELECTRIC circuit to carry I coloumb of charge through a electric conductor

14.

Define the term volt

Answer»

Answer:

I VOLT is referred to the AMOUNT of work DONE in an ELECTRIC circuit to carry I coloumb of charge through a electric conductor

Discussion

15.	What is the full form of DOST
Answer» Explanation: FULL FORM of DOST DEPARTMENT of Science and TECHNOLOGY

15.

What is the full form of DOST

Answer»

Explanation:

FULL FORM of DOST

DEPARTMENT of Science and TECHNOLOGY

Discussion

16.	We can see the sun before the actual Sunrise by about.
Answer» ANSWER: HOPE it MAY HELP you ........

16.

We can see the sun before the actual Sunrise by about.

Answer»

ANSWER:

HOPE it MAY HELP you ........

Discussion

17.	Hi friends❣️❤️❣️❤️❣️❣️❤️❣️Define❣️❤️❣️1. Bouyancy,2. Thrust,3. Pressure and 4. Density
Answer» $\huge\underline\mathrm{Heya!}$ Buoyancy : The property of fluid by which it exerts an upward force on any object immersed in the fluid is called buoyancy. Thrust : The force exerted on an object perpendicular to the SURFACE is called thrust. Its S. I. unit is Newton Pressure : The force ACTING per unit AREA on a surface acting in a perpendicular direction to it is called pressure. Its S. I unit is Pascal Density : Density of a substance is defined as MASS per unit VOLUME of substance.

17.

Hi friends❣️❤️❣️❤️❣️❣️❤️❣️Define❣️❤️❣️1. Bouyancy,2. Thrust,3. Pressure and 4. Density

Answer»

$\huge\underline\mathrm{Heya!}$

Buoyancy :

The property of fluid by which it exerts an upward force on any object immersed in the fluid is called buoyancy.

Thrust :

The force exerted on an object perpendicular to the SURFACE is called thrust.

Its S. I. unit is Newton

Pressure :

The force ACTING per unit AREA on a surface acting in a perpendicular direction to it is called pressure.

Its S. I unit is Pascal

Density :

Density of a substance is defined as MASS per unit VOLUME of substance.

Discussion

18.	Why is calorimeter painted black in the exp of newton’s law of cooling ?
Answer» Explanation: Newton's LAW of Cooling states that the rate of CHANGE of the TEMPERATURE of an object is proportional to the DIFFERENCE between its own temperature and the ambient temperature (i.e. the temperature of its surroundings). ... Newton's Law would enable us to solve the following problem. PLEASE *MAR*K ME DOWN AS A BRAINLIEST

18.

Why is calorimeter painted black in the exp of newton’s law of cooling ?

Answer»

Explanation:

Newton's LAW of Cooling states that the rate of CHANGE of the TEMPERATURE of an object is proportional to the DIFFERENCE between its own temperature and the ambient temperature (i.e. the temperature of its surroundings). ... Newton's Law would enable us to solve the following problem.

PLEASE MARK ME DOWN AS A BRAINLIEST

Discussion

19.	Express cyclotron frequency
Answer» ANSWER: This is the frequency of a CHARGED particle moving perpendicular to the DIRECTION of a uniform magnetic field b ( constant magnitude and direction ). mark me brainlest .

19.

Express cyclotron frequency

Answer»

ANSWER:

This is the frequency of a CHARGED particle moving perpendicular to the DIRECTION of a uniform magnetic field b ( constant magnitude and direction ). mark me brainlest .

Discussion

20.	Derivation of small g for earth. please answer fast. urgent.
Answer» ANSWER: To CALCULATE the FORCE of gravity of an object, USE the formula: force of gravity = mg, where m is the mass of the object and G is the acceleration of the object due to gravity. Since g is always 9.8 m/s^2, just multiply the object's mass by 9.8 and you'll get its force of gravity

20.

Derivation of small g for earth. please answer fast. urgent.

Answer»

ANSWER:

To CALCULATE the FORCE of gravity of an object, USE the formula: force of gravity = mg, where m is the mass of the object and G is the acceleration of the object due to gravity. Since g is always 9.8 m/s^2, just multiply the object's mass by 9.8 and you'll get its force of gravity

Discussion

21.	Isko solve karo .brainlest mil jayega
Answer» OPTION (a) 5 N W is the ANSWER

21.

Isko solve karo .brainlest mil jayega

Answer»

OPTION (a) 5 N W is the ANSWER

Discussion

22.	calculate the resistance of an electric bulb which allows the 10 ampere current when connected to 220 volt
Answer» ANSWER: GIVEN, V=220V I=10A According to OHM's LAW, V=IR =R=V/I =220/10 =22V Explanation:

22.

calculate the resistance of an electric bulb which allows the 10 ampere current when connected to 220 volt

Answer»

ANSWER:

GIVEN,

V=220V

I=10A

According to OHM's LAW,

V=IR

=R=V/I

=220/10

=22V

Explanation:

Discussion

23.	Who was your English paper ???
Answer» ANSWER: hii buddy here is your answer Explanation: good how was your paper hope it will be HELPFUL to you

23.

Who was your English paper ???

Answer»

ANSWER:

hii

buddy here is your answer

Explanation:

good

how was your paper

hope it will be HELPFUL to you

Discussion

24.	What is sound? Give a thorough explanation.
Answer» Answer: In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or SOLID. Sound is the term to describe what is heard when sound waves pass through a medium to the ear. All SOUNDS are made by VIBRATIONS of molecules through which the sound travels. For instance, when a drum or a cymbal is struck, the object vibrates. These vibrations make air molecules move. Explanation: HOPE THIS HELPS U :) MARK AS BRAINLIEST BUDDY !

24.

What is sound? Give a thorough explanation.

Answer»

Answer:

In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or SOLID.

Sound is the term to describe what is heard when sound waves pass through a medium to the ear. All SOUNDS are made by VIBRATIONS of molecules through which the sound travels. For instance, when a drum or a cymbal is struck, the object vibrates. These vibrations make air molecules move.

Explanation:

HOPE THIS HELPS U :)

MARK AS BRAINLIEST BUDDY !

Discussion

25.	Loudness does not change with the changein :(a) frequency(b) amplitude(c) distance from source of sound(d) presence of other reflectors
Answer» ANSWER: (a) Frequency Explanation: The AMPLITUDE of the SOUND DETERMINES loudness mark me BRAINIEST ♥️

25.

Loudness does not change with the changein :(a) frequency(b) amplitude(c) distance from source of sound(d) presence of other reflectors

Answer»

ANSWER:

(a) Frequency

Explanation:

The AMPLITUDE of the SOUND DETERMINES loudness

mark me BRAINIEST ♥️

Discussion

26.	What is electric Circuit????????
Answer» Answer: An electrical circuit is a path in which ELECTRONS from a VOLTAGE or current source FLOW. ... The part of an electrical circuit that is between the electrons' starting POINT and the point where they return to the source is called an electrical circuit's "load".

26.

What is electric Circuit????????

Answer»

Answer:

An electrical circuit is a path in which ELECTRONS from a VOLTAGE or current source FLOW. ... The part of an electrical circuit that is between the electrons' starting POINT and the point where they return to the source is called an electrical circuit's "load".

Discussion

27.	A ballet dancer spins about a vertical axis at 60 rpm with his arms closed. Now he stretches his arms such that M.I. Increases by 50%. The new speed of revolution is?
Answer» Given: A ballet dancer spins about a vertical axis at 60 RPM with his arms closed. Now he stretches his arms such that M.I. Increases by 50%. To find: New angular velocity. Calculation: LET initial MOMENT of inertia be I , Hence, final moment of inertia will be $\therefore \: I_{2} = I + 50\%I$ $= > \: I_{2} = I + \dfrac{I}{2}$ $= > \: I_{2} = \dfrac{3I}{2}$ Now , applying conservation of angular momentum : $\therefore \: I \times \omega1 = I_{2} \times \omega2$ $= > \: I \times 60= \dfrac{3I}{2} \times \omega2$ $= > \: 60= \dfrac{3}{2} \times \omega2$ $= > \: \omega2 = \dfrac{60 \times 2}{3}$ $= > \: \omega2 = <klux>40</klux> \: rpm$ So, final angular velocity is 40 rpm.

27.

A ballet dancer spins about a vertical axis at 60 rpm with his arms closed. Now he stretches his arms such that M.I. Increases by 50%. The new speed of revolution is?

Answer»

Given:

A ballet dancer spins about a vertical axis at 60 RPM with his arms closed. Now he stretches his arms such that M.I. Increases by 50%.

To find:

New angular velocity.

Calculation:

LET initial MOMENT of inertia be I ,

Hence, final moment of inertia will be

$\therefore \: I_{2} = I + 50\%I$

$= > \: I_{2} = I + \dfrac{I}{2}$

$= > \: I_{2} = \dfrac{3I}{2}$

Now , applying conservation of angular momentum :

$\therefore \: I \times \omega1 = I_{2} \times \omega2$

$= > \: I \times 60= \dfrac{3I}{2} \times \omega2$

$= > \: 60= \dfrac{3}{2} \times \omega2$

$= > \: \omega2 = \dfrac{60 \times 2}{3}$

$= > \: \omega2 = <klux>40</klux> \: rpm$

So, final angular velocity is 40 rpm.

Discussion

28.	NCERT class 6 2019 2020 science physics question paper
Answer» ANSWER: I am not in CLASS 6 I am in 8TH class

28.

NCERT class 6 2019 2020 science physics question paper

Answer»

ANSWER:

I am not in CLASS 6 I am in 8TH class

Discussion

29.	4. The pitch of sound does not dependupon :(a) thickness of vibrating wire0 (b) area of cross-section of vibrating wire(c) amplitude of vibrating wire(d) length of vibrating wire
Answer» ANSWER: LENGTH of VIBRATING WIRE

29.

4. The pitch of sound does not dependupon :(a) thickness of vibrating wire0 (b) area of cross-section of vibrating wire(c) amplitude of vibrating wire(d) length of vibrating wire

Answer»

ANSWER:

LENGTH of VIBRATING WIRE

Discussion

30.	:) The ratio of angular speed of a second-hand to the hour - hand of a watchesa) 60: 1b) 72: 1c) 720:1d) 3600:1
Answer» $\huge\underline{\underline{\bf \orange{Question-}}}$ The RATIO of angular speed of a second-hand to the hour - hand of a watches. $\huge\underline{\underline{\bf \orange{Solution-}}}$ We know that , In watch's second hand it takes 1 min (60s) to COMPLETE one Angular distance i.e 2π So , $\implies{\sf Angular\:Speed(\omega_1)=\dfrac{2π}{60}}$ $\implies{\sf \pink{ \omega_1 = \dfrac{π}{30}\:rad/s}}$ And , Hour hand to watch take 12 HOURS (12×3600=43200s) to complete one rotation i.e 2π $\implies{\sf Angular\:Speed(\omega_2)=\dfrac{2π}{43200} }$ $\implies{\sf \pink{\omega_2= \dfrac{π}{21600} \:rad/s}}$ $\large{\rm Ratio \: of \: second-hand \: and \:hour-hand }$ $\implies{\sf \dfrac{\omega_1}{\omega_2}=\dfrac{π/30}{π/21600} }$ $\implies{\sf \dfrac{\omega_1}{\omega_2}=\dfrac{<klux>720</klux>}{1}}$ $\implies{\bf \red{\omega_1:\omega_2=720:1} }$ $\huge\underline{\underline{\bf \orange{Answer-}}}$ Option (c) 720 : 1 Ratio of angular speed of a second-hand to the hour - hand of a watches is ${\bf \red{720:1}}$ .

30.

:) The ratio of angular speed of a second-hand to the hour - hand of a watchesa) 60: 1b) 72: 1c) 720:1d) 3600:1

Answer»

$\huge\underline{\underline{\bf \orange{Question-}}}$

The RATIO of angular speed of a second-hand to the hour - hand of a watches.

$\huge\underline{\underline{\bf \orange{Solution-}}}$

We know that ,

In watch's second hand it takes 1 min (60s) to COMPLETE one Angular distance i.e 2π

So ,

$\implies{\sf Angular\:Speed(\omega_1)=\dfrac{2π}{60}}$

$\implies{\sf \pink{ \omega_1 = \dfrac{π}{30}\:rad/s}}$

And ,

Hour hand to watch take 12 HOURS (12×3600=43200s) to complete one rotation i.e 2π

$\implies{\sf Angular\:Speed(\omega_2)=\dfrac{2π}{43200} }$

$\implies{\sf \pink{\omega_2= \dfrac{π}{21600} \:rad/s}}$

$\large{\rm Ratio \: of \: second-hand \: and \:hour-hand }$

$\implies{\sf \dfrac{\omega_1}{\omega_2}=\dfrac{π/30}{π/21600} }$

$\implies{\sf \dfrac{\omega_1}{\omega_2}=\dfrac{<klux>720</klux>}{1}}$

$\implies{\bf \red{\omega_1:\omega_2=720:1} }$

$\huge\underline{\underline{\bf \orange{Answer-}}}$

Option (c) 720 : 1

Ratio of angular speed of a second-hand to the hour - hand of a watches is ${\bf \red{720:1}}$ .

Discussion

31.	Three ranges of hearing frequencies give one example each
Answer» your ANSWER is here The three RANGES of hearing are : 1. AUDIBLE range 2.infrasonic range 3. ULTRASONIC range example of each of the ranges are : 1. audible range= the range which human can hear ( 20hz to 20,000hz) 2.infrasonic range= rhinoceros can communicate to each other with only 5Hz of frequency 3.ultrasonic range= bats can hear more than 20,000Hz of frequency. HopE thiS ansWer will helP you.......

31.

Three ranges of hearing frequencies give one example each

Answer»

your ANSWER is here

The three RANGES of hearing are :

1. AUDIBLE range 2.infrasonic range 3. ULTRASONIC range

example of each of the ranges are :

1. audible range= the range which human can hear ( 20hz to 20,000hz)

2.infrasonic range= rhinoceros can communicate to each other with only 5Hz of frequency

3.ultrasonic range= bats can hear more than 20,000Hz of frequency.

HopE thiS ansWer will helP you.......

Discussion

32.	How to make blub glow in salt water
Answer» ANSWER: BULB cannot GLOW in SALT WATER

32.

How to make blub glow in salt water

Answer»

ANSWER:

BULB cannot GLOW in SALT WATER

Discussion

33.	(i) State Newton's first law of motion.(ii) Why are passengers travelling in a car thrown outwards when the car takes a sharp turn?
Answer» ANSWER: Because of Inertia Explanation: As PER N LAW passengers WANT to be static but the car moves so.... hope it will help

33.

(i) State Newton's first law of motion.(ii) Why are passengers travelling in a car thrown outwards when the car takes a sharp turn?

Answer»

ANSWER:

Because of Inertia

Explanation:

As PER N LAW passengers WANT to be static but the car moves so....

hope it will help

Discussion

34.	A body is moving with a velocity of 10m/s.If the motion is uniform,what will be the velocity after 10s?
Answer» ANSWER:10m/s Explanation:B\c if a VELOCITY is UNIFORM than at any TIME the answer will be only 10m\s

34.

A body is moving with a velocity of 10m/s.If the motion is uniform,what will be the velocity after 10s?

Answer»

ANSWER:10m/s

Explanation:B\c if a VELOCITY is UNIFORM than at any TIME the answer will be only 10m\s

Discussion

35.	What is declination? Draw a diagram to showthe angle between the declination and truedirection of geographic north.
Answer» Explanation: MAGNETIC DECLINATION, or magnetic variation, is the ANGLE on the HORIZONTAL plane between magnetic north and TRUE north .

35.

What is declination? Draw a diagram to showthe angle between the declination and truedirection of geographic north.

Answer»

Explanation:

MAGNETIC DECLINATION, or magnetic variation, is the ANGLE on the HORIZONTAL plane between magnetic north and TRUE north .

Discussion

36.	It's urgent pls answer if electron flow from north to south and write the direction of flow of current
Answer» ANSWER: The FLOW of CURRENT is always opposite of electrons flow so if it flow from NORTH to south the current flow will be south to north.

36.

It's urgent pls answer if electron flow from north to south and write the direction of flow of current

Answer»

ANSWER:

The FLOW of CURRENT is always opposite of electrons flow so if it flow from NORTH to south the current flow will be south to north.

Discussion

37.	21. When an inert gas is filled in place of vacuum ina photocell, then photoelectric current(1) Increases (2) Decreases3) Remains constant (4) Becomes zero
Answer» ANSWER: INCREASES Explanation: when an inert gas is placed in VACUUM the pressure from the CATHODE CAUSES collision and ionization of gas takes place thereby current increases

37.

21. When an inert gas is filled in place of vacuum ina photocell, then photoelectric current(1) Increases (2) Decreases3) Remains constant (4) Becomes zero

Answer»

ANSWER:

INCREASES

Explanation:

when an inert gas is placed in VACUUM the pressure from the CATHODE CAUSES collision and ionization of gas takes place thereby current increases

Discussion

38.	5. What is short circuit?6. Write two differences between bar magnet and electromagnet.7. Write true or false against the following statements:(1) Combination of two or more cells is called battery.(11) Fuse is a safety device which prevents from electric hazards.(iii) CFL consume more electricity than a bulb.
Answer» Explanation: A short circuit is an electrical circuit that allows a current to travel ALONG an unintended PATH with no or very low electrical impedance. This results in an excessive current flowing through the circuit. The opposite of a short circuit is an "open circuit", which is an infinite RESISTANCE between two nodes. Difference between Permanent Magnet and Electromagnet is magnetic field and STRENGTH. In Electromagnet, the magnetic field is created by a wire-wound coil but the magnetic field of Permanent (Bar) Magnet cannot be changed. True True False

38.

5. What is short circuit?6. Write two differences between bar magnet and electromagnet.7. Write true or false against the following statements:(1) Combination of two or more cells is called battery.(11) Fuse is a safety device which prevents from electric hazards.(iii) CFL consume more electricity than a bulb.

Answer»

Explanation:

A short circuit is an electrical circuit that allows a current to travel ALONG an unintended PATH with no or very low electrical impedance. This results in an excessive current flowing through the circuit. The opposite of a short circuit is an "open circuit", which is an infinite RESISTANCE between two nodes.

Difference between Permanent Magnet and Electromagnet is magnetic field and STRENGTH. In Electromagnet, the magnetic field is created by a wire-wound coil but the magnetic field of Permanent (Bar) Magnet cannot be changed.

True

False

Discussion

39.	State one way in which money influences media....
Answer» Answer: In TERMS of earning MONEY ,MEDIA shows false PROPAGANDA, advertisement and information to the citizens . For their own greed,they ditch the innocence people. hope my answer was HELPFUL to you ... Mark as brainliest

39.

State one way in which money influences media....

Answer»

Answer:

In TERMS of earning MONEY ,MEDIA shows false PROPAGANDA, advertisement and information to the citizens .

For their own greed,they ditch the innocence people.

hope my answer was HELPFUL to you ...

Mark as brainliest

Discussion

40.	What is colour addition and subtraction
Answer» Answer: The primary colors are red, green and blue. When mixed, the PHENOMENON is described as addition of colors. If instead of taking red, blue and green, we JOIN cyan, MAGENTA and yellow (resulting from the mixture of the three above) the result is the primary colors PLUS black. This is called subtraction of colors.

40.

What is colour addition and subtraction

Answer»

Answer:

The primary colors are red, green and blue. When mixed, the PHENOMENON is described as addition of colors. If instead of taking red, blue and green, we JOIN cyan, MAGENTA and yellow (resulting from the mixture of the three above) the result is the primary colors PLUS black. This is called subtraction of colors.

Discussion

41.	A Body Travels 10 kilometre in 1 hour and 100meter in 30 minutes find the average speed
Answer» Answer: 2km/h Explanation: its so SIMPLE a boldy TRAVEL 10 km in 1 HOUR 100mtr in 300 minutes so the average speed is 2 km/h

41.

A Body Travels 10 kilometre in 1 hour and 100meter in 30 minutes find the average speed

Answer»

Answer:

2km/h

Explanation:

its so SIMPLE

a boldy TRAVEL 10 km in 1 HOUR

100mtr in 300 minutes

so the average speed is 2 km/h

Discussion

42.	Difference between real and virtual image
Answer» ANSWER: The following are the differences between a real image and VIRTUAL image: ... A real image is formed when the rays of light after reflection or REFRACTION actually MEET at some point whereas a virtual image is formed when the rays of light after reflection or refraction appear to meet at a point.

42.

Difference between real and virtual image

Answer»

ANSWER:

The following are the differences between a real image and VIRTUAL image: ... A real image is formed when the rays of light after reflection or REFRACTION actually MEET at some point whereas a virtual image is formed when the rays of light after reflection or refraction appear to meet at a point.

Discussion

43.	What is lateral inversion
Answer» ANSWER: LATERAL inversion is a phenomenon in which left appears to be RIGHT and vice versa. It is due to direction that LIGHT FOLLOWS when it strikes a reflecting surface, generally a mirror.

43.

What is lateral inversion

Answer»

ANSWER:

LATERAL inversion is a phenomenon in which left appears to be RIGHT and vice versa. It is due to direction that LIGHT FOLLOWS when it strikes a reflecting surface, generally a mirror.

Discussion

44.	How do you simulate the 12 volts electric cell in the circuit?
Answer» ANSWER: EXPLANATION: It is very EASY

44.

How do you simulate the 12 volts electric cell in the circuit?

Answer»

ANSWER:

EXPLANATION:

It is very EASY

Discussion

45.	1KHz = ?1MHz = ?1GHz = ?1um = ?1nm = ?A* = ?
Answer» Explanation: 10³Hz 10^6Hz 10^9Hz 10^-6m 10^-9m 10^-10m

45.

1KHz = ?1MHz = ?1GHz = ?1um = ?1nm = ?A* = ?

Answer»

Explanation:

10³Hz
10^6Hz
10^9Hz
10^-6m
10^-9m
10^-10m

Discussion

46.	The coefficient of linear expansion of a metal is 2.5 x 10-71°F. Its value in degree celsius is La) 3 x 10-7b) 1.5 x 10-7c) 2.5 x 10-7d) 4.5 x 10-10-s
Answer» ANSWER: I don't KNOW PLS mark BRAIN list

46.

The coefficient of linear expansion of a metal is 2.5 x 10-71°F. Its value in degree celsius is La) 3 x 10-7b) 1.5 x 10-7c) 2.5 x 10-7d) 4.5 x 10-10-s

Answer»

ANSWER:

I don't KNOW PLS mark BRAIN list

Discussion

47.	Conservation of angular momentum if dl/dt=0,L= constant
Answer» Answer: When the net external torque acting on a system about a GIVEN AXIS is zero , the TOTAL angular momentum of the system about that axis remains CONSTANT." T = dL/dt, the time rate of change of angular momentum. Torque is the "force equivalent" in rotational MOTION.

47.

Conservation of angular momentum if dl/dt=0,L= constant

Answer»

Answer:

When the net external torque acting on a system about a GIVEN AXIS is zero , the TOTAL angular momentum of the system about that axis remains CONSTANT."

T = dL/dt, the time rate of change of angular momentum. Torque is the "force equivalent" in rotational MOTION.

Discussion

48.	1. How many terminals are there in a battery?2. Write full form of CFL.3. What are the components of an electric circuit?4. What do you mean by the term open circuit?5. What is short circuit?
Answer» Answer: 1. 2 terminals÷negative and positive 2.Compact FLUORESCENT Light 3. BULB wire BATTERY switch or key 4.The CIRCUIT having its key or switch o

48.

1. How many terminals are there in a battery?2. Write full form of CFL.3. What are the components of an electric circuit?4. What do you mean by the term open circuit?5. What is short circuit?

Answer»

Answer:

1. 2 terminals÷negative and positive

2.Compact FLUORESCENT Light

3. BULB

wire

BATTERY

switch or key

4.The CIRCUIT having its key or switch o

Discussion

49.	The number of atoms per unit cell of body centred cube is a) 1 b) 2 c) 4 d) 6
Answer» Answer: the face entered cubic (fcc)has a coordination number of 12 and contains 4 atoms per UNIT cell.tge body CENTERED cubic has coordination number of 8 and contains 2 atoms per unit cell.the simple cubic has a coordination number of 6 and contains 1 atom per unit cell hope this helps u

49.

The number of atoms per unit cell of body centred cube is a) 1 b) 2 c) 4 d) 6

Answer»

Answer:

the face entered cubic (fcc)has a coordination number of 12 and contains 4 atoms per UNIT cell.tge body CENTERED cubic has coordination number of 8 and contains 2 atoms per unit cell.the simple cubic has a coordination number of 6 and contains 1 atom per unit cell

hope this helps u

Discussion

50.	Name of liquidWeight of theliquid (gm)Weight of the bottlefilled with liquid (gm)Relativedensity of theliquidS.No.(1)(4)(5)(2)(3)MilkGroundnut oil3KeroseneDr.
Answer» ANSWER: OXYGEN and CARBON DIOXIDE

50.

Name of liquidWeight of theliquid (gm)Weight of the bottlefilled with liquid (gm)Relativedensity of theliquidS.No.(1)(4)(5)(2)(3)MilkGroundnut oil3KeroseneDr.

Answer»

ANSWER:

OXYGEN and CARBON DIOXIDE

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

three resistors of 6 ohm 3 ohm to ohm are connected in parallel this combination process connected to another resistor of 4 ohm and to spell of 1.5 ohm draw circuit diagram and calculate the current drawn from the cell​

If the electron of hydrogen atom takes 3.2*10^-17 sec to complete one revolution, then how much current is consituted

4. Consider a radioactive material of half life1.5 min. If one of the nuclei decays now, the nextone will decay after ​

( ≧Д≦)( ≧Д≦)( ≧Д≦)(´;︵;`)​

13. The half life of radioactive radon is 3.8 days. Thetime at the end of whichof the radonsample will remain undecayed is(1) 3.8 days(2) 16.5 days19 days(4) 76 days​

How do you define a j. E. R. K? Can a body have acceleration without an applied force? ​

N atom of a radioactive element emit n alphaparticles per second. The half life of the element is ​

a stone is thrown vertically upward with an initial velocity of 40 m/s. taking G= 10 m/s^2. find the maximum height reached by the stone . what is the stone net displacement and the total distance covered by the stone ?

A porter lifts a luggage 15kg from the ground and puts it on his head 1.5m above the ground. Calculate the work done by him on the luggage.

THANKYOU

If v = axy then E is proportional to​

Where does magnet get its power from

Example 12.6A wire of given material having length land area of cross-section Ahas a resistance of 4 ohm. What would be the resistance of another wireof the same material having length 1/2 and area of cross-section 2A?​

How do we hear sound?

Define the term volt​

What is the full form of DOST​

We can see the sun before the actual Sunrise by about. ​

Hi friends❣️❤️❣️❤️❣️❣️❤️❣️Define❣️❤️❣️1. Bouyancy,2. Thrust,3. Pressure and 4. Density​

Buoyancy :

Thrust :

Pressure :

Density :

Why is calorimeter painted black in the exp of newton’s law of cooling ?

Express cyclotron frequency​

Derivation of small g for earth. please answer fast. urgent.​

Isko solve karo .brainlest mil jayega​

calculate the resistance of an electric bulb which allows the 10 ampere current when connected to 220 volt ​

Who was your English paper ???​

how was your paper

What is sound? Give a thorough explanation.

Loudness does not change with the changein :(a) frequency(b) amplitude(c) distance from source of sound(d) presence of other reflectors​

What is electric Circuit???????? ​

A ballet dancer spins about a vertical axis at 60 rpm with his arms closed. Now he stretches his arms such that M.I. Increases by 50%. The new speed of revolution is?

Given:

To find:

Calculation:

NCERT class 6 2019 2020 science physics question paper​

4. The pitch of sound does not dependupon :(a) thickness of vibrating wire0 (b) area of cross-section of vibrating wire(c) amplitude of vibrating wire(d) length of vibrating wire​

:) The ratio of angular speed of a second-hand to the hour - hand of a watchesa) 60: 1b) 72: 1c) 720:1d) 3600:1​

Three ranges of hearing frequencies give one example each

How to make blub glow in salt water

(i) State Newton's first law of motion.(ii) Why are passengers travelling in a car thrown outwards when the car takes a sharp turn?​

A body is moving with a velocity of 10m/s.If the motion is uniform,what will be the velocity after 10s?​

What is declination? Draw a diagram to showthe angle between the declination and truedirection of geographic north. ​

It's urgent pls answer if electron flow from north to south and write the direction of flow of current​

21. When an inert gas is filled in place of vacuum ina photocell, then photoelectric current(1) Increases (2) Decreases3) Remains constant (4) Becomes zero​

State one way in which money influences media....​

What is colour addition and subtraction​

A Body Travels 10 kilometre in 1 hour and 100meter in 30 minutes find the average speed​

Difference between real and virtual image​

What is lateral inversion​

How do you simulate the 12 volts electric cell in the circuit? ​

1KHz = ?1MHz = ?1GHz = ?1um = ?1nm = ?A* = ?​

The coefficient of linear expansion of a metal is 2.5 x 10-71°F. Its value in degree celsius is La) 3 x 10-7b) 1.5 x 10-7c) 2.5 x 10-7d) 4.5 x 10-10-s​

Conservation of angular momentum if dl/dt=0,L= constant

1. How many terminals are there in a battery?2. Write full form of CFL.3. What are the components of an electric circuit?4. What do you mean by the term open circuit?5. What is short circuit?​

The number of atoms per unit cell of body centred cube is ​ a) 1 b) 2 c) 4 d) 6

Name of liquidWeight of theliquid (gm)Weight of the bottlefilled with liquid (gm)Relativedensity of theliquidS.No.(1)(4)(5)(2)(3)MilkGroundnut oil3KeroseneDr.​

three resistors of 6 ohm 3 ohm to ohm are connected in parallel this combination process connected to another resistor of 4 ohm and to spell of 1.5 ohm draw circuit diagram and calculate the current drawn from the cell

4. Consider a radioactive material of half life1.5 min. If one of the nuclei decays now, the nextone will decay after

( ≧Д≦)( ≧Д≦)( ≧Д≦)(´;︵;`)

13. The half life of radioactive radon is 3.8 days. Thetime at the end of whichof the radonsample will remain undecayed is(1) 3.8 days(2) 16.5 days19 days(4) 76 days

How do you define a j. E. R. K? Can a body have acceleration without an applied force?

N atom of a radioactive element emit n alphaparticles per second. The half life of the element is

If v = axy then E is proportional to

Example 12.6A wire of given material having length land area of cross-section Ahas a resistance of 4 ohm. What would be the resistance of another wireof the same material having length 1/2 and area of cross-section 2A?

Define the term volt

What is the full form of DOST

We can see the sun before the actual Sunrise by about.

Hi friends❣️❤️❣️❤️❣️❣️❤️❣️Define❣️❤️❣️1. Bouyancy,2. Thrust,3. Pressure and 4. Density

Express cyclotron frequency

Derivation of small g for earth. please answer fast. urgent.

Isko solve karo .brainlest mil jayega

calculate the resistance of an electric bulb which allows the 10 ampere current when connected to 220 volt

Who was your English paper ???

Loudness does not change with the changein :(a) frequency(b) amplitude(c) distance from source of sound(d) presence of other reflectors

What is electric Circuit????????

NCERT class 6 2019 2020 science physics question paper

4. The pitch of sound does not dependupon :(a) thickness of vibrating wire0 (b) area of cross-section of vibrating wire(c) amplitude of vibrating wire(d) length of vibrating wire

:) The ratio of angular speed of a second-hand to the hour - hand of a watchesa) 60: 1b) 72: 1c) 720:1d) 3600:1

(i) State Newton's first law of motion.(ii) Why are passengers travelling in a car thrown outwards when the car takes a sharp turn?

A body is moving with a velocity of 10m/s.If the motion is uniform,what will be the velocity after 10s?

What is declination? Draw a diagram to showthe angle between the declination and truedirection of geographic north.

It's urgent pls answer if electron flow from north to south and write the direction of flow of current

21. When an inert gas is filled in place of vacuum ina photocell, then photoelectric current(1) Increases (2) Decreases3) Remains constant (4) Becomes zero

State one way in which money influences media....

What is colour addition and subtraction

A Body Travels 10 kilometre in 1 hour and 100meter in 30 minutes find the average speed

Difference between real and virtual image

What is lateral inversion

How do you simulate the 12 volts electric cell in the circuit?

1KHz = ?1MHz = ?1GHz = ?1um = ?1nm = ?A* = ?

The coefficient of linear expansion of a metal is 2.5 x 10-71°F. Its value in degree celsius is La) 3 x 10-7b) 1.5 x 10-7c) 2.5 x 10-7d) 4.5 x 10-10-s

1. How many terminals are there in a battery?2. Write full form of CFL.3. What are the components of an electric circuit?4. What do you mean by the term open circuit?5. What is short circuit?

The number of atoms per unit cell of body centred cube is a) 1 b) 2 c) 4 d) 6

Name of liquidWeight of theliquid (gm)Weight of the bottlefilled with liquid (gm)Relativedensity of theliquidS.No.(1)(4)(5)(2)(3)MilkGroundnut oil3KeroseneDr.