13232 + Interview Questions in Physics Page 43 InterviewSolution

2101.	A boy walks from A to B and then to C. After reaching C, he takes a U-turn to B and at last again a U-turn from B to reach C as shown in the figure. Calculate the displacement of the boy in this case.
Answer» A boy walks from A to B and then to C. After reaching C, he takes a U-turn to B and at last again a U-turn from B to reach C as shown in the figure. Calculate the displacement of the boy in this case.

2101.

A boy walks from A to B and then to C. After reaching C, he takes a U-turn to B and at last again a U-turn from B to reach C as shown in the figure. Calculate the displacement of the boy in this case.

Answer»

A boy walks from A to B and then to C. After reaching C, he takes a U-turn to B and at last again a U-turn from B to reach C as shown in the figure. Calculate the displacement of the boy in this case.

Discussion

2102.	40 waves pass through a point on the surface of pond in 2 seconds. Calculate the wavelength if the velocity of the wave is 3.5 m/s?
Answer» 40 waves pass through a point on the surface of pond in 2 seconds. Calculate the wavelength if the velocity of the wave is 3.5 m/s?

Discussion

2103.	can acceleration and velocity act on two different directions?
Answer» can acceleration and velocity act on two different directions?

Discussion

2104.	Velocity and momentum
Answer» Velocity and momentum

Discussion

2105.	Name non conventional source of energy which can be harnessed 24hrs throughout a year
Answer» Name non conventional source of energy which can be harnessed 24hrs throughout a year

Discussion

2106.	The first satellite launched by India was
Answer» The first satellite launched by India was

Discussion

2107.	What is the rate of change of velocity called?
Answer» What is the rate of change of velocity called?

Discussion

2108.	Among the following, the substance expected to have the highest ignition temperature is
Answer» Among the following, the substance expected to have the highest ignition temperature is

Discussion

2109.	The circuit shown in the figure is equivalent to a load of
Answer» The circuit shown in the figure is equivalent to a load of

Discussion

2110.	What is hydro energy? Explain the principle of generating electricity from hydro energy. How much hydro electric power is generated in India?
Answer» What is hydro energy? Explain the principle of generating electricity from hydro energy. How much hydro electric power is generated in India?

Discussion

2111.	work done by restoring force in a string within elastic limit is -10J. Maximum amount of heat produced in the string is?
Answer» work done by restoring force in a string within elastic limit is -10J. Maximum amount of heat produced in the string is?

Discussion

2112.	Can a body have energy without having momentum
Answer» Can a body have energy without having momentum

Discussion

2113.	Explain Sonar and defect in metal block
Answer» Explain Sonar and defect in metal block

Discussion

2114.	In a given electrical circuit which of the following should melt first to protect the circuit:
Answer» In a given electrical circuit which of the following should melt first to protect the circuit:

Discussion

2115.	Two blocks A and B of mass m and M respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a force F on the block B, what is the force exerted by the experimenter on A ?
Answer» Two blocks A and B of mass m and M respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a force F on the block B, what is the force exerted by the experimenter on A ?

Discussion

2116.	At what distance in front of a concave mirror of focal length 30 cm should you place your face in order to obtain an image with a magnification of two?
Answer» At what distance in front of a concave mirror of focal length 30 cm should you place your face in order to obtain an image with a magnification of two?

Discussion

2117.	nunund, stage 2015-lb)16)can accelerate at 20 cm/s? and decelerate63. A train acce100 cm/s2. Then the minimum time for the trairnavel between the stations 2 km apart istrain should start at one station and stop at(Theanother station)(1) 125 s(2) 100 s(3) 155 s(4) 200 slu Rrndesh Stage-l, 2015-1
Answer» nunund, stage 2015-lb)16)can accelerate at 20 cm/s? and decelerate63. A train acce100 cm/s2. Then the minimum time for the trairnavel between the stations 2 km apart istrain should start at one station and stop at(Theanother station)(1) 125 s(2) 100 s(3) 155 s(4) 200 slu Rrndesh Stage-l, 2015-1

Discussion

2118.	a bird hit the windscreen of a fast moving car and fell on the bonnet. Which of the 2, motor or the bird suffers a greater change in momentum?
Answer» a bird hit the windscreen of a fast moving car and fell on the bonnet. Which of the 2, motor or the bird suffers a greater change in momentum?

Discussion

2119.	compare the acceleration of a motar cycle that accelerates from 80 km/h to 90 km/h with the acceleration of a bicycle that accrlerates from rest to 10 km/h in the same time
Answer» compare the acceleration of a motar cycle that accelerates from 80 km/h to 90 km/h with the acceleration of a bicycle that accrlerates from rest to 10 km/h in the same time

Discussion

2120.	the speed of sound in H2 at NTP is 1270m/s then the speed ina mixture of H2 and O2 in the ratio 4:1by vol. i
Answer» the speed of sound in H2 at NTP is 1270m/s then the speed ina mixture of H2 and O2 in the ratio 4:1by vol. i

Discussion

2121.	If E1 and E2 are electric field at axial and equatorial point of an electric dipole then E1.E2
Answer» If E1 and E2 are electric field at axial and equatorial point of an electric dipole then E1.E2<0 how??

Discussion

2122.	Is number of waves= it's wavelength?
Answer» Is number of waves= it's wavelength?

Discussion

2123.	the convex side has a higher pressure than the concave side.how the both statements are correct?
Answer» the convex side has a higher pressure than the concave side. how the both statements are correct?

Discussion

2124.	Velocity is also defined as displacement by time . Does that mean velocity does not cover the entire distance?
Answer» Velocity is also defined as displacement by time . Does that mean velocity does not cover the entire distance?

Discussion

2125.	Which of the following graph cannot be possible?
Answer» Which of the following graph cannot be possible?

Discussion

2126.	A car moves along the periphery of a square field of side 10m. He completes travelling one side in the 40s. What will be the magnitude of distance and displacement at the end of 2min and 20 seconds?
Answer» A car moves along the periphery of a square field of side 10m. He completes travelling one side in the 40s. What will be the magnitude of distance and displacement at the end of 2min and 20 seconds?

Discussion

2127.	The dimension of μ0ϵ0dϕEdt is -
Answer» The dimension of $μ_{0} ϵ_{0} \frac{d ϕ_{E}}{d t}$ is -

Discussion

2128.	26. A light beam of intensity I falls on a surface perpendicularly. If 60% light is completely absorbed by the surface and 40% light is reflected then theradiation pressure on the surface is
Answer» 26. A light beam of intensity I falls on a surface perpendicularly. If 60% light is completely absorbed by the surface and 40% light is reflected then theradiation pressure on the surface is

Discussion

2129.	what is difference between resonance effect and resonance?
Answer» what is difference between resonance effect and resonance?

Discussion

2130.	Choose the correct statements from the below mentioned statements:-
Answer» Choose the correct statements from the below mentioned statements:-

Discussion

2131.	The velocity attained by a car in 10 s is 40m/s. Calculate its acceleration if it started from rest.
Answer» The velocity attained by a car in 10 s is 40m/s. Calculate its acceleration if it started from rest.

Discussion

2132.	If a charge of 1800 C flows through the cross-section of a conducting wire in 10 minutes, what is the value of the current that flows through the wire?
Answer» If a charge of $1800 C$ flows through the cross-section of a conducting wire in $10 minutes$ , what is the value of the current that flows through the wire?

Discussion

2133.	Calculate the force between two masses of 100 kg and 1000 kg separated by a distance of 10 m (G=6.67∗10−11 N m2kg2).
Answer» Calculate the force between two masses of 100 kg and 1000 kg separated by a distance of 10 m ( $G = 6.67 * 10^{- 11}$ N $\frac{m^{2}}{k g^{2}}$ ).

Discussion

2134.	Why does a block of wood held under water rise to the surface when released?
Answer» Why does a block of wood held under water rise to the surface when released?

Discussion

2135.	A particle performing linear S.H.M has a period of 6.28 seconds and a path lengthof 20 cm. What is the velocity when its displacement is 6 cm from mean position?
Answer» A particle performing linear S.H.M has a period of 6.28 seconds and a path lengthof 20 cm. What is the velocity when its displacement is 6 cm from mean position?

Discussion

2136.	The magnetic field lines due to a straight wire carrying current is:
Answer» The magnetic field lines due to a straight wire carrying current is:

Discussion

2137.	Calculate the formal charge on S atom in the most stable structure of SO3.
Answer» Calculate the formal charge on S atom in the most stable structure of $S O_{3}$ .

Discussion

2138.	10. A water drop in air will behave like a 1)Converging lens 2)Cylindrical lens 3)Diverging lens 4)Plane glass slab Give reason.
Answer» 10. A water drop in air will behave like a 1)Converging lens 2)Cylindrical lens 3)Diverging lens 4)Plane glass slab Give reason.

Discussion

2139.	A large number of balls are thrown vertically upward in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of balls thrown per minute is (g=10m/s^2
Answer» A large number of balls are thrown vertically upward in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of balls thrown per minute is (g=10m/s^2

Discussion

2140.	an electric lamp and screen are placed on the table in a line at a distant of separation D to get the image of the lamp SRP required convex lens with focal length
Answer» an electric lamp and screen are placed on the table in a line at a distant of separation D to get the image of the lamp SRP required convex lens with focal length

Discussion

2141.	If F force is applied on area A2, the value of pressure is P1. If we change the force to 2F and area to 2A, then calculate the change in pressure.
Answer» If $F$ force is applied on area $\frac{A}{2}$ , the value of pressure is $P_{1}$ . If we change the force to $2 F$ and area to $2 A$ , then calculate the change in pressure.

Discussion

2142.	water falls from height pf 60 m at rate of 15kg/
Answer» water falls from height pf 60 m at rate of 15kg/

Discussion

2143.	Relative density of substance is
Answer» Relative density of substance is

Discussion

2144.	13.A balloon going upwards with a velocity of 12ms ,is at a height of 65m from the earth at any instant .exactly at this instant a packet drops from it .how much time will the packet take in reaching the earth?(g=10ms2)
Answer» 13.A balloon going upwards with a velocity of 12ms ,is at a height of 65m from the earth at any instant .exactly at this instant a packet drops from it .how much time will the packet take in reaching the earth?(g=10ms2)

Discussion

2145.	The same amount of pressure is applied on two different objects with different surface area. In this scenario which of the following statements is correct. A.both the surface experience the same Force . b.the surface having more surface area experiences more force. c.the surface having less surface area experiences more force d.force is zero in both cases
Answer» The same amount of pressure is applied on two different objects with different surface area. In this scenario which of the following statements is correct. A.both the surface experience the same Force . b.the surface having more surface area experiences more force. c.the surface having less surface area experiences more force d.force is zero in both cases

2145.

The same amount of pressure is applied on two different objects with different surface area. In this scenario which of the following statements is correct. A.both the surface experience the same Force . b.the surface having more surface area experiences more force. c.the surface having less surface area experiences more force d.force is zero in both cases

Answer»

The same amount of pressure is applied on two different objects with different surface area. In this scenario which of the following statements is correct.

A.both the surface experience the same Force .

b.the surface having more surface area experiences more force.

c.the surface having less surface area experiences more force

d.force is zero in both cases

Discussion

2146.	Draw a diagram to show that advance sunset due to atmospheric refraction
Answer» Draw a diagram to show that advance sunset due to atmospheric refraction

Discussion

2147.	When an object comes to rest at the end what is its final velocity
Answer» When an object comes to rest at the end what is its final velocity

Discussion

2148.	A particle travelling along a straight line starts with a velocity of metres per second and its speed increases per second by a metres. The particle travels 10 metres is 2 second and 28 metres is 4 seconds. Find u and a. (If the distance travelled in t seconds is s metres, then)
Answer» A particle travelling along a straight line starts with a velocity of metres per second and its speed increases per second by a metres. The particle travels 10 metres is 2 second and 28 metres is 4 seconds. Find u and a. (If the distance travelled in t seconds is s metres, then)

2148.

A particle travelling along a straight line starts with a velocity of metres per second and its speed increases per second by a metres. The particle travels 10 metres is 2 second and 28 metres is 4 seconds. Find u and a. (If the distance travelled in t seconds is s metres, then)

Answer»

A particle travelling along a straight line starts with a velocity of metres per second and its speed increases per second by a metres. The particle travels 10 metres is 2 second and 28 metres is 4 seconds. Find u and a.

(If the distance travelled in t seconds is s metres, then)

Discussion

2149.	Area under velocity-time graph gives:
Answer» Area under velocity-time graph gives:

Discussion

2150.	A source producing 1500 sound waves in 3s. If the distance covered by a compression and an adjacent rarefaction be 68 cm. find a frequency, wavelength & velocity of sound waves Ans 500hz, 1.36m and 680m/s Pls solve fast
Answer» A source producing 1500 sound waves in 3s. If the distance covered by a compression and an adjacent rarefaction be 68 cm. find a frequency, wavelength & velocity of sound waves Ans 500hz, 1.36m and 680m/s Pls solve fast

2150.

A source producing 1500 sound waves in 3s. If the distance covered by a compression and an adjacent rarefaction be 68 cm. find a frequency, wavelength & velocity of sound waves Ans 500hz, 1.36m and 680m/s Pls solve fast

Answer»

A source producing 1500 sound waves in 3s. If the distance covered by a compression and an adjacent rarefaction be 68 cm. find a frequency, wavelength & velocity of sound waves

Ans 500hz, 1.36m and 680m/s

Pls solve fast

Discussion

Explore topic-wise InterviewSolutions in .

A boy walks from A to B and then to C. After reaching C, he takes a U-turn to B and at last again a U-turn from B to reach C as shown in the figure. Calculate the displacement of the boy in this case.

40 waves pass through a point on the surface of pond in 2 seconds. Calculate the wavelength if the velocity of the wave is 3.5 m/s?

can acceleration and velocity act on two different directions?

Velocity and momentum

Name non conventional source of energy which can be harnessed 24hrs throughout a year

The first satellite launched by India was

What is the rate of change of velocity called?

Among the following, the substance expected to have the highest ignition temperature is

The circuit shown in the figure is equivalent to a load of

What is hydro energy? Explain the principle of generating electricity from hydro energy. How much hydro electric power is generated in India?

work done by restoring force in a string within elastic limit is -10J. Maximum amount of heat produced in the string is?

Can a body have energy without having momentum

Explain Sonar and defect in metal block

In a given electrical circuit which of the following should melt first to protect the circuit:

Two blocks A and B of mass m and M respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a force F on the block B, what is the force exerted by the experimenter on A ?

At what distance in front of a concave mirror of focal length 30 cm should you place your face in order to obtain an image with a magnification of two?

nunund, stage 2015-lb)16)can accelerate at 20 cm/s? and decelerate63. A train acce100 cm/s2. Then the minimum time for the trairnavel between the stations 2 km apart istrain should start at one station and stop at(Theanother station)(1) 125 s(2) 100 s(3) 155 s(4) 200 slu Rrndesh Stage-l, 2015-1

a bird hit the windscreen of a fast moving car and fell on the bonnet. Which of the 2, motor or the bird suffers a greater change in momentum?

compare the acceleration of a motar cycle that accelerates from 80 km/h to 90 km/h with the acceleration of a bicycle that accrlerates from rest to 10 km/h in the same time

the speed of sound in H2 at NTP is 1270m/s then the speed ina mixture of H2 and O2 in the ratio 4:1by vol. i

If E1 and E2 are electric field at axial and equatorial point of an electric dipole then E1.E2

Is number of waves= it's wavelength?

the convex side has a higher pressure than the concave side.how the both statements are correct?

Velocity is also defined as displacement by time . Does that mean velocity does not cover the entire distance?

Which of the following graph cannot be possible?

A car moves along the periphery of a square field of side 10m. He completes travelling one side in the 40s. What will be the magnitude of distance and displacement at the end of 2min and 20 seconds?

The dimension of μ0ϵ0dϕEdt is -

26. A light beam of intensity I falls on a surface perpendicularly. If 60% light is completely absorbed by the surface and 40% light is reflected then theradiation pressure on the surface is

what is difference between resonance effect and resonance?

Choose the correct statements from the below mentioned statements:-

The velocity attained by a car in 10 s is 40m/s. Calculate its acceleration if it started from rest.

If a charge of 1800 C flows through the cross-section of a conducting wire in 10 minutes, what is the value of the current that flows through the wire?

Calculate the force between two masses of 100 kg and 1000 kg separated by a distance of 10 m (G=6.67∗10−11 N m2kg2).

Why does a block of wood held under water rise to the surface when released?

A particle performing linear S.H.M has a period of 6.28 seconds and a path lengthof 20 cm. What is the velocity when its displacement is 6 cm from mean position?

The magnetic field lines due to a straight wire carrying current is:

Calculate the formal charge on S atom in the most stable structure of SO3.

10. A water drop in air will behave like a 1)Converging lens 2)Cylindrical lens 3)Diverging lens 4)Plane glass slab Give reason.

A large number of balls are thrown vertically upward in quick succession in such a way that the next ball is thrown when the previous one is at the maximum height. If the maximum height is 5m, the number of balls thrown per minute is (g=10m/s^2

an electric lamp and screen are placed on the table in a line at a distant of separation D to get the image of the lamp SRP required convex lens with focal length

If F force is applied on area A2, the value of pressure is P1. If we change the force to 2F and area to 2A, then calculate the change in pressure.

water falls from height pf 60 m at rate of 15kg/

Relative density of substance is

13.A balloon going upwards with a velocity of 12ms ,is at a height of 65m from the earth at any instant .exactly at this instant a packet drops from it .how much time will the packet take in reaching the earth?(g=10ms2)

Draw a diagram to show that advance sunset due to atmospheric refraction

When an object comes to rest at the end what is its final velocity

A particle travelling along a straight line starts with a velocity of metres per second and its speed increases per second by a metres. The particle travels 10 metres is 2 second and 28 metres is 4 seconds. Find u and a. (If the distance travelled in t seconds is s metres, then)

Area under velocity-time graph gives:

A source producing 1500 sound waves in 3s. If the distance covered by a compression and an adjacent rarefaction be 68 cm. find a frequency, wavelength &amp; velocity of sound waves Ans 500hz, 1.36m and 680m/s Pls solve fast

A source producing 1500 sound waves in 3s. If the distance covered by a compression and an adjacent rarefaction be 68 cm. find a frequency, wavelength & velocity of sound waves Ans 500hz, 1.36m and 680m/s Pls solve fast