67486 + Interview Questions in Secondary School in Physics

1.	My question is in the attachment
Answer» ANSWER: POST CORRECT QUESTIONS .........

1.

My question is in the attachment

Answer»

ANSWER:

POST CORRECT QUESTIONS .........

Discussion

2.	A the type of mirror that used1)as a rear view image and 2) by the dentist also mention the reason of their use
Answer» Answer: 1. CONVEX mirror 2. CONCAVE mirror Explanation: hope you GOT it MARK it brainliest

2.

A the type of mirror that used1)as a rear view image and 2) by the dentist also mention the reason of their use

Answer»

Answer:

1. CONVEX mirror

2. CONCAVE mirror

Explanation:

hope you GOT it MARK it brainliest

Discussion

3.	Fill the box please give answer quickly
Answer» ANSWER: F=Gm1m2/9d^2 is the REQUIRED answer

3.

Fill the box please give answer quickly

Answer»

ANSWER:

F=Gm1m2/9d^2 is the REQUIRED answer

Discussion

4.	What is effective resistance in the given circuit?Please answer fastly I have exam after 2 hours. I will definitely mark has brainliest.
Answer» Answer: by series law ...... Rp = R1 + R 2 Rp = 5 + 5 Rp = 10 ohms hence effective resistance equal to 10 ohms HOPE it helps and yes best of luck for you exam ....... may God give Ur all support and may U ACHIEVE good marks in Ur paper be prepared for Ur exam and TRY to free stress THANKS .......... AGAIN BEST OF LUCK

4.

What is effective resistance in the given circuit?Please answer fastly I have exam after 2 hours. I will definitely mark has brainliest.

Answer»

Answer:

by series law ......

Rp = R1 + R 2

Rp = 5 + 5

Rp = 10 ohms

hence effective resistance equal to 10 ohms HOPE it helps

and yes best of luck for you exam .......

may God give Ur all support and may U ACHIEVE good marks in Ur paper

be prepared for Ur exam and TRY to free stress

THANKS ..........

AGAIN BEST OF LUCK

Discussion

5.	The magnified image ,of an object ,appears to be formed, behind the mirror, by an apparent intersection of the reflected rays. What can you say about a) nature of image b) the type of mirror used?
Answer» a. the IMAGE is VIRTUAL B. the MIRROR is a CONCAVE mirror

5.

The magnified image ,of an object ,appears to be formed, behind the mirror, by an apparent intersection of the reflected rays. What can you say about a) nature of image b) the type of mirror used?

Answer»

a. the IMAGE is VIRTUAL

B. the MIRROR is a CONCAVE mirror

Discussion

6.	What is the relation between momentum and energy
Answer» ANSWER: The energy–momentum relation is CONSISTENT with the familiar mass–energy relation in both its INTERPRETATIONS: E = mc2 relates total energy E to the (total) relativistic mass m (alternatively denoted mrel or mtot ), while E0 = m0c2 relates REST energy E0 to (INVARIANT) rest mass m0.

6.

What is the relation between momentum and energy

Answer»

ANSWER:

The energy–momentum relation is CONSISTENT with the familiar mass–energy relation in both its INTERPRETATIONS: E = mc2 relates total energy E to the (total) relativistic mass m (alternatively denoted mrel or mtot ), while E0 = m0c2 relates REST energy E0 to (INVARIANT) rest mass m0.

Discussion

7.	A body of mass 5 kg is moving with a velocity 2m/s calculate its lendar momentum
Answer» ANSWER: P=m.V P=52 P=10kgm.s-1 Explanation:* p is MOMENTUM, m is mass, v OS VELOCITY

7.

A body of mass 5 kg is moving with a velocity 2m/s calculate its lendar momentum

Answer»

ANSWER:

P=m.V

P=5*2

P=10kgm.s-1

Explanation:

p is MOMENTUM, m is mass, v OS VELOCITY

Discussion

8.	Two rods A and B of same cross-sectional area A and length L connected in series between a source(T1 = 100° C) and a sink(T2 = 0° C) as shown in figure. The rod is laterally insulated. The ratio of the thermal resistance of the rod is?
Answer» $\blue{\bold{\underline{\underline{Answer:}}}}$ $\green{\therefore{\frac{R_{A}}{R_{B}}=\frac{1}{3}}}\\$ $\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$ $\green{ \underline \bold{<klux>GIVEN</klux> : }} \\ : \implies T_{1} = 100^{ \circ} \: C \\ \\ : \implies T_{2} = 0^{ \circ} \: C \\ \\ : \implies L_{1} = L_{2} = L \\ \\ : \implies A_{1} = A_{2} = A \\ \\ \red{ \underline \bold{To \: Find : }} \\ : \implies \frac{ R_{A}}{ R_{B} } = ?$ • ACCORDING to given QUESTION : $\bold{As \: we \: know \: that} \\ \circ \: \text{Thermal \: resistance (R) }= \frac{ \text{Length(l)}}{ \text{Thermal \: conductivity(k)} \times \text{Cross \: section \: area(A)}} \\ \\ : \implies R_{A} = \frac{ l_{1} }{ k_{1} \times A_{1} } \\ \\ : \implies R_{A} = \frac{l}{3k \times A} - - - - - (1) \\ \\ \bold{for \: R_{B} : } \\ : \implies R_{B} = \frac{ l_{2} }{ k_{2} \times A_{2} } \\ \\ : \implies R_{B} = \frac{l}{k \times A} - - - - - (2) \\ \\ \bold{Dividing \:(2) \: upon \: (1)} \\ : \implies \frac{ R_{A}}{R_{B} } = \frac{ \frac{l}{3k \times A} }{ \frac{l}{k \times A} } \\ \\ : \implies \frac{ R_{A}}{R_{B} } = \frac{l \times k \times A}{l \times 3k \times A} \\ \\ \green{ : \implies \frac{ R_{A}}{R_{B} } = \frac{1}{3} }$

8.

Two rods A and B of same cross-sectional area A and length L connected in series between a source(T1 = 100° C) and a sink(T2 = 0° C) as shown in figure. The rod is laterally insulated. The ratio of the thermal resistance of the rod is?

Answer»

$\blue{\bold{\underline{\underline{Answer:}}}}$

$\green{\therefore{\frac{R_{A}}{R_{B}}=\frac{1}{3}}}\\$

$\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

$\green{ \underline \bold{<klux>GIVEN</klux> : }} \\ : \implies T_{1} = 100^{ \circ} \: C \\ \\ : \implies T_{2} = 0^{ \circ} \: C \\ \\ : \implies L_{1} = L_{2} = L \\ \\ : \implies A_{1} = A_{2} = A \\ \\ \red{ \underline \bold{To \: Find : }} \\ : \implies \frac{ R_{A}}{ R_{B} } = ?$

• ACCORDING to given QUESTION :

$\bold{As \: we \: know \: that} \\ \circ \: \text{Thermal \: resistance (R) }= \frac{ \text{Length(l)}}{ \text{Thermal \: conductivity(k)} \times \text{Cross \: section \: area(A)}} \\ \\ : \implies R_{A} = \frac{ l_{1} }{ k_{1} \times A_{1} } \\ \\ : \implies R_{A} = \frac{l}{3k \times A} - - - - - (1) \\ \\ \bold{for \: R_{B} : } \\ : \implies R_{B} = \frac{ l_{2} }{ k_{2} \times A_{2} } \\ \\ : \implies R_{B} = \frac{l}{k \times A} - - - - - (2) \\ \\ \bold{Dividing \:(2) \: upon \: (1)} \\ : \implies \frac{ R_{A}}{R_{B} } = \frac{ \frac{l}{3k \times A} }{ \frac{l}{k \times A} } \\ \\ : \implies \frac{ R_{A}}{R_{B} } = \frac{l \times k \times A}{l \times 3k \times A} \\ \\ \green{ : \implies \frac{ R_{A}}{R_{B} } = \frac{1}{3} }$

Discussion

9.	Name any six domestic appliances whose working is based on the heating effect of electric current
Answer» Domestic APPLIANCES BASED on the heating effect of electric current: 1) Electric Iron 2) Electric heater 3) Electric geyser 4) Induction Cooker 5) Microwave Oven 6) HAIR BLOWER

9.

Name any six domestic appliances whose working is based on the heating effect of electric current

Answer»

Domestic APPLIANCES BASED on the heating effect of electric current:

1) Electric Iron

2) Electric heater

3) Electric geyser

4) Induction Cooker

5) Microwave Oven

6) HAIR BLOWER

Discussion

10.	State all three faradays law of electromagnetic induction?please answer in simple words
Answer» whenever there is a change in magnetic flux LINKED with coil and e m F is produced induced EMF is directly proportional to the RATE of change of magnetic flux

10.

State all three faradays law of electromagnetic induction?please answer in simple words

Answer»

whenever there is a change in magnetic flux LINKED with coil and e m F is produced

induced EMF is directly proportional to the RATE of change of magnetic flux

Discussion

11.	Distinguish with the help of a suitable diagram, the difference in thebehaviour of conductor and a dielectric substance placed in an externalelectric field. How does the polarised dielectric modifies the external field.
Answer» ANSWER: ________________________________________________

11.

Distinguish with the help of a suitable diagram, the difference in thebehaviour of conductor and a dielectric substance placed in an externalelectric field. How does the polarised dielectric modifies the external field.

Answer»

ANSWER:

________________________________________________

Discussion

12.	Anyone who can do this???
Answer» Answer: 1.8% EXPLANATION: because FRACTION of totol VOLUME GET RESULTS

12.

Anyone who can do this???

Answer»

Answer:

1.8%

EXPLANATION:

because FRACTION of totol VOLUME GET RESULTS

Discussion

13.	One difference between conservative force and non conservative force.
Answer» Explanation: A conservative force is a force that does not remove MECHANICAL energy from the SYSTEM . ... Non-conservative forces do remove mechanical energy from the system. Examples of non-conservative forces include air RESISTANCE and (KINETIC) FRICTION. Conservative forces can be associated with a Potential Energy. Please mark as brainliest ☺️☺️☺️☺️☺️hey

13.

One difference between conservative force and non conservative force.

Answer»

Explanation:

A conservative force is a force that does not remove MECHANICAL energy from the SYSTEM

. ... Non-conservative forces do remove mechanical energy from the system. Examples of non-conservative forces include air RESISTANCE and (KINETIC) FRICTION. Conservative forces can be associated with a Potential Energy.

Please mark as brainliest ☺️☺️☺️☺️☺️hey

Discussion

14.	What will be the current flowing through resistance R as shown in the following circuit ?a)4.7 b)4.3 c)5 d)0
Answer» Answer: 0 Explanation: Because there is no POTENTIAL DIFFERENCE

14.

What will be the current flowing through resistance R as shown in the following circuit ?a)4.7 b)4.3 c)5 d)0

Answer»

Answer:

0

Explanation:

Because there is no POTENTIAL DIFFERENCE

Discussion

15.	Which two planets rotate in the clockwise direction. Can anybody tell me why they rotate differently from other planets.
Answer» Answer: RETROGRADE rotation is in the OPPOSITE direction. Mostplanets in our SOLAR system, including EARTH, rotate counter-clockwise or progradedirection, but Venus and Uranus are said to have a retrograde orclockwise rotation AROUND their axes.

15.

Which two planets rotate in the clockwise direction. Can anybody tell me why they rotate differently from other planets.

Answer»

Answer:

RETROGRADE rotation is in the OPPOSITE direction. Mostplanets in our SOLAR system, including EARTH, rotate counter-clockwise or progradedirection, but Venus and Uranus are said to have a retrograde orclockwise rotation AROUND their axes.

Discussion

16.	ANSWER ME URGENTLY.I will mark your answer brainliest if the answer is correct. Plz post the correct answer as i have paper tomorrow. 1.Name a common eye defect that generally occurs in old aged people.2.What is the nature of the image formed on the retina of human eye?3.What do antioxidants do in our body?4.Which eye defect is caused due to fluid pressure in our eyes? 5.What happens when a Ray of light enters air from water?
Answer» Cataract real and inverted Antioxidants are substances that can prevent or slow DAMAGE to cells caused by FREE radicals, unstable molecules that the BODY produces as a reaction to environmental and other pressures. ... This can harm cells and body function. Free radicals are also known as reactive oxygen species glaucoma Refraction*Bends away from normal

Discussion

17.	What is the differential equation for Damped Oscillations?
Answer» Answer: Expression of DAMPED simple HARMONIC motion. Let’s take an example to UNDERSTAND what a damped simple harmonic motion is. Consider a block of mass m connected to an elastic string of spring constant k. In an ideal situation, if we push the block down a little and then release it, its angular frequency of OSCILLATION is ω = √k/ m.

17.

What is the differential equation for Damped Oscillations?

Answer»

Answer:

Expression of DAMPED simple HARMONIC motion. Let’s take an example to UNDERSTAND what a damped simple harmonic motion is. Consider a block of mass m connected to an elastic string of spring constant k. In an ideal situation, if we push the block down a little and then release it, its angular frequency of OSCILLATION is ω = √k/ m.

Discussion

18.	Write proper answer in the box :mu12.mi1712-3dIf F=Gm,me- 2 ,then F =
Answer» ANSWER: F=GMm/9d^2 this your answer here PLZ MARK as BRAINLISTER

18.

Write proper answer in the box :mu12.mi1712-3dIf F=Gm,me- 2 ,then F =

Answer»

ANSWER:

F=GMm/9d^2

this your answer here

PLZ MARK as BRAINLISTER

Discussion

19.	On what factors does the resistance depend?
Answer» ANSWER: the resistance of a conductor mainly depends on four factors length of the conductor - as the length of the conductor increases the resistance also increases area of CROSS section - of the conductor as the area of cross section increases the resistance decreases TEMPERATURE - as the temperature of pure metals increases the resistance also increases nature of material USED - if the resistor is made up of ALLOY then it is likely to have more resistance than metals

19.

On what factors does the resistance depend?

Answer»

ANSWER:

the resistance of a conductor mainly depends on four factors

length of the conductor - as the length of the conductor increases the resistance also increases
area of CROSS section - of the conductor as the area of cross section increases the resistance decreases
TEMPERATURE - as the temperature of pure metals increases the resistance also increases
nature of material USED - if the resistor is made up of ALLOY then it is likely to have more resistance than metals

Discussion

20.	The question is in the attachment
Answer» ANSWER: I don't know Explanation:

20.

The question is in the attachment

Answer»

ANSWER:

I don't know

Explanation:

Discussion

21.	If VIJAY is written as DIAAG in a certain code, how would SURAJ be written in that same code?
Answer» suraj in CERTAIN code jcaia if u FIND it helpful PLEASE mark as BRAINLIEST

21.

If VIJAY is written as DIAAG in a certain code, how would SURAJ be written in that same code?

Answer»

suraj in CERTAIN code jcaia

if u FIND it helpful PLEASE mark as BRAINLIEST

Discussion

22.	Summary on physics assaignments
Answer» Explanation: A DESCRIPTION of the PHYSICS relevant to your aim, which shows your understanding. A brief description of an approach used to COLLECT experimental data. Sufficient raw data from your experiment. Data from your experiment, including any mean and/or other derived VALUES, presented in a table with headings and units.

22.

Summary on physics assaignments

Answer»

Explanation:

A DESCRIPTION of the PHYSICS relevant to your aim, which shows your understanding. A brief description of an approach used to COLLECT experimental data. Sufficient raw data from your experiment. Data from your experiment, including any mean and/or other derived VALUES, presented in a table with headings and units.

Discussion

23.	What is the gravity
Answer» Explanation: Gravity is a force which tries to pull two objects TOWARD each other. Anything which has mass ALSO has a gravitational pull. The more massive an object is, the stronger its gravitational pull is. Earth's gravity is what keeps you on the ground and what causes objects to fall. Gravity is what HOLDS the planets in orbit around the SUN and what keeps the Moon in orbit around Earth. The closer you are to an object, the stronger its gravitational pull is. Gravity is what gives you weight. Plz mark as BRAINLIEST

23.

What is the gravity

Answer»

Explanation:

Gravity is a force which tries to pull two objects TOWARD each other. Anything which has mass ALSO has a gravitational pull. The more massive an object is, the stronger its gravitational pull is. Earth's gravity is what keeps you on the ground and what causes objects to fall. Gravity is what HOLDS the planets in orbit around the SUN and what keeps the Moon in orbit around Earth. The closer you are to an object, the stronger its gravitational pull is. Gravity is what gives you weight.

Plz mark as BRAINLIEST

Discussion

24.	The mass of earth is 6x 10^24 kg and that of a natural satellite is 6.5x 10^20 kg. If the distance BETWEEN them is 3.35x 10^6 km. Calculate the force exerted by earth on it. (G= 6.7 x 10^-11 Nm^2 kg^-2 )
Answer» EXPLANATION: HOPE it helps you PLEASE mark it BRAINLIST FOLLOW me #Rocky

24.

The mass of earth is 6x 10^24 kg and that of a natural satellite is 6.5x 10^20 kg. If the distance BETWEEN them is 3.35x 10^6 km. Calculate the force exerted by earth on it. (G= 6.7 x 10^-11 Nm^2 kg^-2 )

Answer»

EXPLANATION:

HOPE it helps you PLEASE mark it BRAINLIST

FOLLOW me

#Rocky

Discussion

25.	In Q39 can someone pls help me.
Answer» Explanation: OPTION d will be the CORRECT answer MATE.. plz mark as BRAINLIST

25.

In Q39 can someone pls help me.

Answer»

Explanation:

OPTION d will be the CORRECT answer MATE..

plz mark as BRAINLIST

Discussion

26.	A particle of 0.15 kg is attached on 21 and off the light extensible string length 2 metre the other end of the string attached to a fixed point the particle moves to the concept has drawn to a circle the magnitude of the acceleration of a particle is 7 metre per second the string make an angle theta with the vertical find the value of theta the nearest Whole number and the speed of the particle
Answer» Answer: At any time force ACTING on particle vary and hence acceleration (net) will have different direction at different times. TENSION also changes and its minimum at top point. Magnitude of acceleration also varies. Considering earth and particle as a system and no external force on system is acting, total MECHANICAL energy will be conserved.

26.

A particle of 0.15 kg is attached on 21 and off the light extensible string length 2 metre the other end of the string attached to a fixed point the particle moves to the concept has drawn to a circle the magnitude of the acceleration of a particle is 7 metre per second the string make an angle theta with the vertical find the value of theta the nearest Whole number and the speed of the particle

Answer»

Answer:

At any time force ACTING on particle vary and hence acceleration (net) will have different direction at different times. TENSION also changes and its minimum at top point. Magnitude of acceleration also varies.

Considering earth and particle as a system and no external force on system is acting, total MECHANICAL energy will be conserved.

Discussion

27.	zindagi main hamesha maa bap ke hoke rehna varna RONE Rone wale dino ko ate der nahi lagi this is shyari
Answer» Answer: ACCHA H bhot accha mujhe to mza aa GYA

27.

zindagi main hamesha maa bap ke hoke rehna varna RONE Rone wale dino ko ate der nahi lagi this is shyari

Answer»

Answer:

ACCHA H bhot accha mujhe to mza aa GYA

Discussion

28.	Calculate the effective resistance between points (i) C and D, and (ii) A and Bshown in given Fig. 1.42.answer fastly and mark as brainliest.
Answer» R4 , R3 AND R2 ARE IN SERIES , THEIR EQUIVALENT RESISTANCE IS IN PARALLEL WITH R5 RESISTOR WHICH IS FURTHER IN SERIES WITH TEST OF THE RESISTORS . THEREFORE EQUIVALENT RESISTANCE = 45/4 ohms

28.

Calculate the effective resistance between points (i) C and D, and (ii) A and Bshown in given Fig. 1.42.answer fastly and mark as brainliest.

Answer»

R4 , R3 AND R2 ARE IN SERIES , THEIR EQUIVALENT RESISTANCE IS IN PARALLEL WITH R5 RESISTOR WHICH IS FURTHER IN SERIES WITH TEST OF THE RESISTORS .

THEREFORE

EQUIVALENT RESISTANCE = 45/4 ohms

Discussion

29.	What happens to the resistance if the slope of the v-i graph increases
Answer» ANSWER: As you know, the V-I graph is a CONSTANT, NAMED the RESISTANCE. Therefore, when V-I graph increases, the resistance ALSO increases.

29.

What happens to the resistance if the slope of the v-i graph increases

Answer»

ANSWER:

As you know, the V-I graph is a CONSTANT, NAMED the RESISTANCE.

Therefore, when V-I graph increases, the resistance ALSO increases.

Discussion

30.	What is lateral displacement?
Answer» Answer: It is the perpendicular distance between the emergent ray from a glass SLAB and the INCIDENT ray PRODUCED forward. i hope this helps U. thanks

30.

What is lateral displacement?

Answer»

Answer:

It is the perpendicular distance between the emergent ray from a glass SLAB and the INCIDENT ray PRODUCED forward.

i hope this helps U.

thanks

Discussion

31.	candidate of mass 3 kg is pulled by a constant speed along the horizontal force the pulling force has magnitude 25 Newton and exon the angle 15 degree to the horizontal find the work done by the force moving the distance of 2 metres and the normal opponent of conduct force on the carrot
Answer» WORK = force• DISTANCE • COS of angle w = f.d.cos x w=25.2.cos 15=50.cos 15=50.0.966 w=59.3 JOULES

31.

candidate of mass 3 kg is pulled by a constant speed along the horizontal force the pulling force has magnitude 25 Newton and exon the angle 15 degree to the horizontal find the work done by the force moving the distance of 2 metres and the normal opponent of conduct force on the carrot

Answer»

WORK = force• DISTANCE • COS of angle

w = f.d.cos x

w=25.2.cos 15=50.cos 15=50.0.966

w=59.3 JOULES

Discussion

32.	What is the average salinity of seawater ????
Answer» Answer: 35 parts per THOUSAND... Explanation: Seawater is water from a sea or ocean. On AVERAGE, seawater in the WORLD's oceans has a SALINITY of approximately 3.5%, or 35 parts per thousand. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.

32.

What is the average salinity of seawater ????

Answer»

Answer:

35 parts per THOUSAND...

Explanation:

Seawater is water from a sea or ocean. On AVERAGE, seawater in the WORLD's oceans has a SALINITY of approximately 3.5%, or 35 parts per thousand. This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.

Discussion

33.	Where is Effiel towr...........??????????????
Answer» ANSWER: EIFFEL TOWER is in PARIS...

33.

Where is Effiel towr...........??????????????

Answer»

ANSWER:

EIFFEL TOWER is in PARIS...

Discussion

34.	If the persistence of vision is 1/16 seconds . what should be the minimum frequency of ac source for the bulb at 220V and 60 W to appear glowing?
Answer» ANSWER: SRY no IDEA SEARCHING for the same answer

34.

If the persistence of vision is 1/16 seconds . what should be the minimum frequency of ac source for the bulb at 220V and 60 W to appear glowing?

Answer»

ANSWER:

SRY no IDEA SEARCHING for the same answer

Discussion

35.	Give the electrolytic decomposition reaction of sodium chloride and where does the different element obtained explain?
Answer» Answer: 2NaCl 》2Na + CL2........

35.

Give the electrolytic decomposition reaction of sodium chloride and where does the different element obtained explain?

Answer»

Answer:

2NaCl 》2Na + CL2........

Discussion

36.	Write the formula ſor velocity of sound in gases.
Answer» Velocity of Sound in Gas (Newton's FORMULA) where, B is the bulk MODULUS of the AIR. ... This is the required expression for velocity of sound in air. ... Experimentally it has been found that the velocity of sound in air is 332 m/s. ... where, γ = Cp/Cv Cp = Specific HEAT for constant pressure Cv = Specific heat for constant volume γ = adiabatic index. hope this helps you mark it as a brainlist answer follow me thxs...

36.

Write the formula ſor velocity of sound in gases.

Answer»

Velocity of Sound in Gas (Newton's FORMULA)

where, B is the bulk MODULUS of the AIR. ...

This is the required expression for velocity of sound in air. ...

Experimentally it has been found that the velocity of sound in air is 332 m/s. ...

where, γ = Cp/Cv Cp = Specific HEAT for constant pressure Cv = Specific heat for constant volume γ = adiabatic index.

hope this helps you

mark it as a brainlist answer

follow me

thxs...

Discussion

37.	Derivation of mean free path class 11 physics
Answer» The mean free PATH equation DEPENDS UPON the temperature and pressure as well as the molecular diameter. For pressure P0 = mmHg = inHg = kPa. and temperature T= K = C = F, and times the average molecular separation of x 10^ m. hope this helps you mark it as a brainlist answer follow me thxs..

37.

Derivation of mean free path class 11 physics

Answer»

The mean free PATH equation DEPENDS UPON the temperature and pressure as well as the molecular diameter.

For pressure P0 = mmHg = inHg = kPa.

and temperature T= K = C = F,

and times the average molecular separation of x 10^ m.

hope this helps you

mark it as a brainlist answer

follow me

thxs..

Discussion

38.	Find the different between u,v,a,t and s
Answer» ANSWER: but what DIFFERENCE.... your QUESTION is INCOMPLETE..

38.

Find the different between u,v,a,t and s

Answer»

ANSWER:

but what DIFFERENCE....

your QUESTION is INCOMPLETE..

Discussion

39.	Find the different relation between u,v,a,t and s
Answer» ANSWER: HEY MATE here is your answer v=final VELOCITY u=initial velocity a=acceleration s=distance v=u+at s=ut+1/2at^2 v^2=u^2+2as

39.

Find the different relation between u,v,a,t and s

Answer»

ANSWER:

HEY MATE here is your answer

v=final VELOCITY

u=initial velocity

a=acceleration

s=distance

v=u+at

s=ut+1/2at^2

v^2=u^2+2as

Discussion

40.	A horse continues to apply a force in order to move a cart with a constant speed. why?
Answer» ANSWER: Because every action has a EQUAL and opposite reaction as per NEWTONS THIRD law

40.

A horse continues to apply a force in order to move a cart with a constant speed. why?

Answer»

ANSWER:

Because every action has a EQUAL and opposite reaction as per NEWTONS THIRD law

Discussion

41.	Question is in the pic do look into it properly and answer it
Answer» ANSWER: sorry i did not know EXPLANATION: stay bless stay safe stay HAPPY stay HEALTHY be your self and be GOOD

41.

Question is in the pic do look into it properly and answer it

Answer»

ANSWER:

sorry i did not know

EXPLANATION:

stay bless stay safe stay HAPPY stay HEALTHY be your self and be GOOD

Discussion

42.	Who invinted lighting conductor?
Answer» ANSWER: BENJAMIN Franklin and Prokop DIVIS were the two INVENTORS who invented lighting conductors. hope this helps you...

42.

Who invinted lighting conductor?

Answer»

ANSWER:

BENJAMIN Franklin and Prokop DIVIS were the two INVENTORS who invented lighting conductors.

hope this helps you...

Discussion

43.	Chinese in the attachment given above don't spam
Answer» for more ANSWERS LIKE this do FOLLOW me.... ......

43.

Chinese in the attachment given above don't spam

Answer»

for more ANSWERS LIKE this do FOLLOW me....

......

Discussion

44.	5.A light ray enters from medium A to medium B as shown in the figure. The refractive index of mediumB with respect to A will beMedium BMedium A(2) Less than unity(1) Greater than unity(3) Equal to unity(4) Zero{do you guys need the image?}
Answer» ANSWER: the answer is OPTION 3 EQUAL to UNITY

44.

5.A light ray enters from medium A to medium B as shown in the figure. The refractive index of mediumB with respect to A will beMedium BMedium A(2) Less than unity(1) Greater than unity(3) Equal to unity(4) Zero{do you guys need the image?}

Answer»

ANSWER:

the answer is OPTION 3 EQUAL to UNITY

Discussion

45.	What is the effect of line utilization of increasing frame size
Answer» ANSWER: soryyyyyyyyyyygygggg

45.

What is the effect of line utilization of increasing frame size

Answer»

ANSWER:

soryyyyyyyyyyygygggg

Discussion

46.	a sample start with 1000 radioactive atoms .how many half lives have elapsed when 750 atoms have decayed?
Answer» Answer: 250 Explanation: 1000-750=250 half 250

46.

a sample start with 1000 radioactive atoms .how many half lives have elapsed when 750 atoms have decayed?

Answer»

Answer:

250

Explanation:

1000-750=250

half 250

Discussion

47.	80kg. की वस्तु को 40 m की ऊंचाई तक लगभग 50s में ऊपरउठाने हेतु आवश्यक औसत शक्ति ...... होगी।(A) 600KJ/s(B) 3,200 J/s(C) 640J/s(D) 800J/s
Answer» ANSWER: B. 3,200 Explanation: b. 80×40×50= 3,200

47.

80kg. की वस्तु को 40 m की ऊंचाई तक लगभग 50s में ऊपरउठाने हेतु आवश्यक औसत शक्ति ...... होगी।(A) 600KJ/s(B) 3,200 J/s(C) 640J/s(D) 800J/s

Answer»

ANSWER:

B. 3,200

Explanation:

b. 80×40×50= 3,200

Discussion

48.	The second member of Lyman series inhydrogen spectrum has wavelength 5400 Aº.Find the wavelength of first member
Answer» Answer: Explanation: It is just an example do it yourself We have FORMULA , Here λ is wavelength , R is Rydberg constant i.e., RH = 109737 cm⁻¹ For Lyman SERIES ni = 1 and nf = 2, 3, 4, ....... ∞ But question is saying about 2nd line of Lyman series means , ni = 1 and nf = 3 So, 1/λ = 109737 cm⁻¹ × (1)² [ 1/1² - 1/3² ] [ for Hydrogen Spectra Z = 1 ] = 109737 × [1 - 1/9 ] = 109737 × 8/9 cm⁻¹ = 877896/9cm⁻¹ Now, λ = 9/877896 cm = 1.025 × 10⁻⁷ m = 102.5 nm

48.

The second member of Lyman series inhydrogen spectrum has wavelength 5400 Aº.Find the wavelength of first member

Answer»

Answer:

Explanation:

It is just an example do it yourself

We have FORMULA ,

Here λ is wavelength , R is Rydberg constant i.e., RH = 109737 cm⁻¹

For Lyman SERIES ni = 1 and nf = 2, 3, 4, ....... ∞

But question is saying about 2nd line of Lyman series

means , ni = 1 and nf = 3

So, 1/λ = 109737 cm⁻¹ × (1)² [ 1/1² - 1/3² ] [ for Hydrogen Spectra Z = 1 ]

= 109737 × [1 - 1/9 ]

= 109737 × 8/9 cm⁻¹

= 877896/9cm⁻¹

Now, λ = 9/877896 cm = 1.025 × 10⁻⁷ m = 102.5 nm

Discussion

49.	What is banking of roads? why it is needed
Answer» ANSWER: The outer edge of the ROAD is slightly raised than inner edge is called BANKING of ROADS... It is needed to avoid skipping...

49.

What is banking of roads? why it is needed

Answer»

ANSWER:

The outer edge of the ROAD is slightly raised than inner edge is called BANKING of ROADS...

It is needed to avoid skipping...

Discussion

50.	14. (a) Define uniform acceleration. What is the acceleration of a body moving with uniformvelocity?(b) A particle moves over three quarters of a circle of radius r. What is the magnitude of itdisplacement?
Answer» Answer: a) A BODY is said to be in uniform acceleration if the VELOCITY CHANGES equally in equal interval of time. Acceleration will be zero if the body MOVES with uniform velocity. b) √2 r Explanation:

50.

14. (a) Define uniform acceleration. What is the acceleration of a body moving with uniformvelocity?(b) A particle moves over three quarters of a circle of radius r. What is the magnitude of itdisplacement?

Answer»

Answer:

a) A BODY is said to be in uniform acceleration if the VELOCITY CHANGES equally in equal interval of time.

Acceleration will be zero if the body MOVES with uniform velocity.

b) √2 r

Explanation:

Discussion

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