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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 4001. |
In which of the following cases, irregular reflection is taking place? |
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Answer» In which of the following cases, irregular reflection is taking place? |
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| 4002. |
A particle is moving at a constant speed V from a large distance towards a concave mirror of radius R along its principal axis. Find the speed of the image formed by the mirror as a function of the distance x of the particle from the mirror. |
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Answer» A particle is moving at a constant speed V from a large distance towards a concave mirror of radius R along its principal axis. Find the speed of the image formed by the mirror as a function of the distance x of the particle from the mirror. |
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| 4003. |
A body immersed in a liquid appears lighter than it really is. Explain. |
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Answer» A body immersed in a liquid appears lighter than it really is. Explain. |
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| 4004. |
Question 6Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms−1. It implies that the boy is(a) at rest(b) moving with no acceleration(c) in accelerated motion(d) moving with uniform velocity |
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Answer» Question 6 Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms−1. It implies that the boy is (a) at rest (b) moving with no acceleration (c) in accelerated motion (d) moving with uniform velocity |
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| 4005. |
The phenomenon which causes the formation of mirage is known as |
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Answer» The phenomenon which causes the formation of mirage is known as |
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| 4006. |
What is frequency of variation of amplitude?How to calculate it? |
| Answer» What is frequency of variation of amplitude?How to calculate it? | |
| 4007. |
why F-H--O BONDING STRONG THAN H-F-H |
| Answer» why F-H--O BONDING STRONG THAN H-F-H | |
| 4008. |
Question 24Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it.(a) How much work is done by the men in lifting the box?(b) How much work do they do in just holding it?(c) Why do they get tired while holding it? (g=10ms−2) |
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Answer» Question 24 Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it. (a) How much work is done by the men in lifting the box? (b) How much work do they do in just holding it? (c) Why do they get tired while holding it? (g=10ms−2) |
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| 4009. |
A constant force F is applied on a body at rest. The power (P) generated is related to the time elapsed (t) as |
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Answer» A constant force F is applied on a body at rest. The power (P) generated is related to the time elapsed (t) as |
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| 4010. |
Choose the correct water image of mirror image of given figure.दिए गए चित्र के दर्पण प्रतिबिंब के सही जल प्रतिबिंब का चयन कीजिए। |
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Answer» Choose the correct water image of mirror image of given figure. |
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| 4011. |
Question 24While travelling on a rickshaw, you might have experienced that if the seat cover is very smooth, you tend to slip when brakes are applied suddenly. Explain. |
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Answer» Question 24 While travelling on a rickshaw, you might have experienced that if the seat cover is very smooth, you tend to slip when brakes are applied suddenly. Explain. |
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| 4012. |
25.Three identical metallic spheres A B C .A and B are charged and c is uncharged .A and B carries Same nature of charge having magnitude in the ratio 3 :1 when they are separated by given distance .They apply magnitude of force f one each other. C is first brought in contact with sphere A. Then it is removed and brought in contact with sphere B .It is again removed and sphere exactly midway along the |
| Answer» 25.Three identical metallic spheres A B C .A and B are charged and c is uncharged .A and B carries Same nature of charge having magnitude in the ratio 3 :1 when they are separated by given distance .They apply magnitude of force f one each other. C is first brought in contact with sphere A. Then it is removed and brought in contact with sphere B .It is again removed and sphere exactly midway along the | |
| 4013. |
A circular coil having N turns is made from a wire of length L metre. If a current of 1 ampere is passed through it and placed in a magnetic field of B tesla, the maximum torque on it is:- (1)inversely proportional to N^2 (2)inversely proportional to N (3)directly proportional to N (4)independent of N |
| Answer» A circular coil having N turns is made from a wire of length L metre. If a current of 1 ampere is passed through it and placed in a magnetic field of B tesla, the maximum torque on it is:- (1)inversely proportional to N^2 (2)inversely proportional to N (3)directly proportional to N (4)independent of N | |
| 4014. |
a body takes time t to reach the bottom of an inclined plane of angle * with the horizontal. if the plane is made rough time time taken now is 2t the coefficent of friction of the rough surface is |
| Answer» a body takes time t to reach the bottom of an inclined plane of angle * with the horizontal. if the plane is made rough time time taken now is 2t the coefficent of friction of the rough surface is | |
| 4015. |
Why do porters place the load they have to carry, on a roll of cloth rather than directly on their head? |
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Answer» Why do porters place the load they have to carry, on a roll of cloth rather than directly on their head? |
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| 4016. |
Why is rolling friction least among all co-efficients of friction? |
| Answer» Why is rolling friction least among all co-efficients of friction? | |
| 4017. |
A solid cylinder of length and radius r is heat up same temp as that of a cube of edge length a. If both have same material Volume and allowed to cool under similar conditions, then ratio of amount of radiations radiated will be? |
| Answer» A solid cylinder of length and radius r is heat up same temp as that of a cube of edge length a. If both have same material Volume and allowed to cool under similar conditions, then ratio of amount of radiations radiated will be? | |
| 4018. |
Define biogeographical evidences. Explain adaptive radiation in Australian marsupials. |
| Answer» Define biogeographical evidences. Explain adaptive radiation in Australian marsupials. | |
| 4019. |
why internal force does not affect the position of center of mass of any object? |
| Answer» why internal force does not affect the position of center of mass of any object? | |
| 4020. |
Suppose the sun expands so that its radius becomes 100 times its present radius and its surface temperature becomes half of its present value. Then, the total energy emitted by it in the same time will increase by a factor of[neglect surrounding temperature] |
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Answer» Suppose the sun expands so that its radius becomes 100 times its present radius and its surface temperature becomes half of its present value. Then, the total energy emitted by it in the same time will increase by a factor of [neglect surrounding temperature] |
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| 4021. |
25. A wheel starting from rest is uniformly accelerated at 2 rad/s for 5 s. It is allowed to rotate for the next 5 s with constant angular speed and is finally brought to rest with uniform retardation in the next 5 s. The total angle rotated by the wheel is?? |
| Answer» 25. A wheel starting from rest is uniformly accelerated at 2 rad/s for 5 s. It is allowed to rotate for the next 5 s with constant angular speed and is finally brought to rest with uniform retardation in the next 5 s. The total angle rotated by the wheel is?? | |
| 4022. |
Sam's father and mother are astronauts. Last month they returned from a tour to the moon. Sam's father told him that they had air filled helmets and it also had microphones, which they used for talking to each other. But his mother was not able to listen to him when they removed their helmets. (Assume they were wearing oxygen masks when they removed their helmets). What is the reason? |
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Answer» Sam's father and mother are astronauts. Last month they returned from a tour to the moon. Sam's father told him that they had air filled helmets and it also had microphones, which they used for talking to each other. But his mother was not able to listen to him when they removed their helmets. (Assume they were wearing oxygen masks when they removed their helmets). What is the reason? |
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| 4023. |
Light travels in ___________. |
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Answer» Light travels in ___________. |
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| 4024. |
Intensity is: |
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Answer» Intensity is: |
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| 4025. |
Assume the distance between sun and mirror is infinity and the sun is much above the principal axis. Where will the image of the sun be formed? |
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Answer» Assume the distance between sun and mirror is infinity and the sun is much above the principal axis. Where will the image of the sun be formed?
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| 4026. |
ntwhen a stone falling from the top of vertical tower has fallen a distance x m,another is let fall from a point y m below the top.If the fall from the rest and reach the ground together,then the height of the tower is.n |
| Answer» ntwhen a stone falling from the top of vertical tower has fallen a distance x m,another is let fall from a point y m below the top.If the fall from the rest and reach the ground together,then the height of the tower is.n | |
| 4027. |
(b) An applied unbalanced force causes a change in momentum. explain |
| Answer» (b) An applied unbalanced force causes a change in momentum. explain | |
| 4028. |
How to relate velocity and position by a graph |
| Answer» How to relate velocity and position by a graph | |
| 4029. |
a) 1/a+b = 1/a+1/b+1/x , a+b not equal to 0 b) 2x/x-4 + 2x-5/x-3 =25/3 |
| Answer» a) 1/a+b = 1/a+1/b+1/x , a+b not equal to 0 b) 2x/x-4 + 2x-5/x-3 =25/3 | |
| 4030. |
the emf of a cell having internal resis†an ce is a) work done by cell in moving a unit positive charge from positive terminal to negative terminal inside cell. b)work done by cell in moving a unit positive charge from negative terminal to positive terminal inside cell c) potential difference across external resis†an ce d) work done by cell for moving a unit positive charge against gravitational fo |
| Answer» the emf of a cell having internal resis†an ce is a) work done by cell in moving a unit positive charge from positive terminal to negative terminal inside cell. b)work done by cell in moving a unit positive charge from negative terminal to positive terminal inside cell c) potential difference across external resis†an ce d) work done by cell for moving a unit positive charge against gravitational fo | |
| 4031. |
What is specific chargeWhat is the difference between charge and specific chargeWhat is relativistic charged particles and it's velocity? |
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Answer» What is specific charge What is the difference between charge and specific charge What is relativistic charged particles and it's velocity? |
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| 4032. |
How do bats see? |
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Answer» How do bats see? |
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| 4033. |
46. calculate molarity of 90% weight by volume H2SO4 having density 1.98g/ml |
| Answer» 46. calculate molarity of 90% weight by volume H2SO4 having density 1.98g/ml | |
| 4034. |
3 similar vessels are filled to the same height with 3 liquids of densities d1, d2, and d3 (d1 > d2 > d3). |
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Answer» 3 similar vessels are filled to the same height with 3 liquids of densities d1, d2, and d3 (d1 > d2 > d3). |
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| 4035. |
An electric iron of resistance 20Ω takes a current of 5 A. Calculate the heat developed in 30 seconds. |
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Answer» An electric iron of resistance 20Ω takes a current of 5 A. Calculate the heat developed in 30 seconds. |
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| 4036. |
Question 22In an electroscope, if negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of positive charge is brought in contact with the clip, what will happen? |
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Answer» Question 22 In an electroscope, if negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying equal amount of positive charge is brought in contact with the clip, what will happen? |
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| 4037. |
What energy transformation happens in harnessing ocean thermal energy? |
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Answer» What energy transformation happens in harnessing ocean thermal energy? |
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| 4038. |
The density of alcohol is 600 kg m−3. Express it in g cm−3. |
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Answer» The density of alcohol is 600 kg m−3. Express it in g cm−3. |
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| 4039. |
An unpolarized ray of light is incident on a glass surface at polarising angle of 57.5∘, then the angle between the incident ray and refracted ray is, |
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Answer» An unpolarized ray of light is incident on a glass surface at polarising angle of 57.5∘, then the angle between the incident ray and refracted ray is, |
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| 4040. |
What is curvature and focal length in eye lensRepresent diagrammatically |
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Answer» What is curvature and focal length in eye lens Represent diagrammatically |
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| 4041. |
Your parents are going to buy a house. They have been offered one house on the roadside and another house three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer. |
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Answer» Your parents are going to buy a house. They have been offered one house on the roadside and another house three lanes away from the roadside. Which house would you suggest your parents should buy? Explain your answer. |
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| 4042. |
The resultant of two forces acting on a body is zero if the forces are: |
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Answer» The resultant of two forces acting on a body is zero if the forces are: |
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| 4043. |
A full moon appears on Sunday. The next full moon will appear on? |
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Answer» A full moon appears on Sunday. The next full moon will appear on? |
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| 4044. |
Parallel side glass slab of thickness 8 cm is made of a material of refractive index √3. When light is incident on one of the parallel faces at an angle of 60∘ with the normal to the surface and emerges from other parallel face, find the lateral displacement of the emergent ray. |
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Answer» Parallel side glass slab of thickness 8 cm is made of a material of refractive index √3. When light is incident on one of the parallel faces at an angle of 60∘ with the normal to the surface and emerges from other parallel face, find the lateral displacement of the emergent ray. |
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| 4045. |
Through which of the following surfaces can regular reflection take place? |
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Answer» Through which of the following surfaces can regular reflection take place? |
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| 4046. |
if hydrogen gas is heated to a very high temperature then the fraction of enrgy possessed by gas molecules correspond to rotational motion a)3/5 b)2/ |
| Answer» if hydrogen gas is heated to a very high temperature then the fraction of enrgy possessed by gas molecules correspond to rotational motion a)3/5 b)2/ | |
| 4047. |
Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement explaining why. 1st boy - rolling, static, sliding 2nd boy - rolling, sliding, static 3rd boy - static, sliding, rolling 4th boy - sliding, static, rolling [3 MARKS] |
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Answer» Four children were asked to arrange forces due to rolling, static and sliding frictions in a decreasing order. Their arrangements are given below. Choose the correct arrangement explaining why. 1st boy - rolling, static, sliding 2nd boy - rolling, sliding, static 3rd boy - static, sliding, rolling 4th boy - sliding, static, rolling [3 MARKS] |
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| 4048. |
A stone of mass 20 g falling from height of 2 km hits the ground with a speed of 200 ms–1. The work done by the gravitational force is Options: 100 J 200 J 300J 400J |
| Answer» A stone of mass 20 g falling from height of 2 km hits the ground with a speed of 200 ms–1. The work done by the gravitational force is Options: 100 J 200 J 300J 400J | |
| 4049. |
Question 3 (d)Fill in the blanks in the following statements:(d) The north pole of a magnet ___ the north pole of another magnet. |
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Answer» Question 3 (d) |
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| 4050. |
7. The position-time graphs of two cars A and B are straight lines making angles 30^° and 60^° with the time axisrespectively. The ratio of velocities of A and B isaait, of o prticle moving along a straight line is as shown in the fiqure aiven below. The |
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Answer» 7. The position-time graphs of two cars A and B are straight lines making angles 30^° and 60^° with the time axis respectively. The ratio of velocities of A and B is aait, of o prticle moving along a straight line is as shown in the fiqure aiven below. The |
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