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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.
| 5901. |
Potential energy of a body is given by, u = A – Bx2. Magnitude of force acting on the particle is Options: 1 Cons†an t 2 Proportional to x2 3 Proportional to x 4 Inversely proportional to x |
| Answer» Potential energy of a body is given by, u = A – Bx2. Magnitude of force acting on the particle is Options: 1 Cons†an t 2 Proportional to x2 3 Proportional to x 4 Inversely proportional to x | |
| 5902. |
An athlete runs some distance before a long jump because a) it helps him to apply large force b) by running force increase c) he gains energy d) to get large inertia of Motion |
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Answer» An athlete runs some distance before a long jump because a) it helps him to apply large force b) by running force increase c) he gains energy d) to get large inertia of Motion |
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| 5903. |
if radius of earth contracted by 0.1 % its mass remaining same then weight of the weight the body at earth's surface will increase by ? |
| Answer» if radius of earth contracted by 0.1 % its mass remaining same then weight of the weight the body at earth's surface will increase by ? | |
| 5904. |
83.focal length of an equal convex lens is 20 cm the refractive index of material of the lens is 1.5 now one of the curved surface is silvered at what distance from the lens and object is to be placed so that image coincide with the object |
| Answer» 83.focal length of an equal convex lens is 20 cm the refractive index of material of the lens is 1.5 now one of the curved surface is silvered at what distance from the lens and object is to be placed so that image coincide with the object | |
| 5905. |
During the Gulf War, Iraqi forces intentionally released large quantities of oil into the Persian Gulf. What might have been the implications? |
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Answer» During the Gulf War, Iraqi forces intentionally released large quantities of oil into the Persian Gulf. What might have been the implications? |
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| 5906. |
Draw velocity time graph for an object moving along a straight line with constant acceleration and having non zero initial velocity. Using this graph derive displacement time relation ( second equation of motion) for the motion |
| Answer» Draw velocity time graph for an object moving along a straight line with constant acceleration and having non zero initial velocity. Using this graph derive displacement time relation ( second equation of motion) for the motion | |
| 5907. |
14. A bullet, on penetrating two successive wooden planks of unequal thickness, loses its velocity by 200 m s-1 in each case. If the initial velocity of the bullet is 1000 m s-1, calculate the ratio of thickness of the planks |
| Answer» 14. A bullet, on penetrating two successive wooden planks of unequal thickness, loses its velocity by 200 m s-1 in each case. If the initial velocity of the bullet is 1000 m s-1, calculate the ratio of thickness of the planks | |
| 5908. |
The mass of cyclist together with the bike is 90 kg. Calculate the increase in kinetic energy if the speed increases from 6.0 km/h to 12 km/h. |
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Answer» The mass of cyclist together with the bike is 90 kg. Calculate the increase in kinetic energy if the speed increases from 6.0 km/h to 12 km/h. |
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| 5909. |
When the net force acting on an object is zero, the total momentum of the system will |
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Answer» When the net force acting on an object is zero, the total momentum of the system will |
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| 5910. |
s are in equilibrium when suspended in water from the arms of a balance. Thef one body is 36 g and its density is 9 g/cc. If the mass of the other is 48 g, its densitymass oin g/cc is :(2) 3/2(3) 3(4) 5 |
| Answer» s are in equilibrium when suspended in water from the arms of a balance. Thef one body is 36 g and its density is 9 g/cc. If the mass of the other is 48 g, its densitymass oin g/cc is :(2) 3/2(3) 3(4) 5 | |
| 5911. |
Distance-time graph of two objects A and B are shown below. Which statement is true for the speed of object A and B? |
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Answer» Distance-time graph of two objects A and B are shown below.
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| 5912. |
In English the phrase "tip of the Iceberg" means a small visible fraction of something that is mostly hidden. For a real iceberg what is this fraction, if the density of seawater is 1.03 g/cc and that of ice is 0.92 g/cc ? |
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Answer» In English the phrase "tip of the Iceberg" means a small visible fraction of something that is mostly hidden. For a real iceberg what is this fraction, if the density of seawater is 1.03 g/cc and that of ice is 0.92 g/cc ? |
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| 5913. |
What do you mean by acceleration? How do you find acceleration from velocity-time graph? |
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Answer» What do you mean by acceleration? How do you find acceleration from velocity-time graph? |
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| 5914. |
A force gives an object of m1 an acceleration of12 m/s2 and an object of mass m2, an accelerationof 10 m/s2. The ratio of accelerations the force would give to an object of mass m2- m1 and m2 +m |
| Answer» A force gives an object of m1 an acceleration of12 m/s2 and an object of mass m2, an accelerationof 10 m/s2. The ratio of accelerations the force would give to an object of mass m2- m1 and m2 +m | |
| 5915. |
State the universal law of gravitation. Three masses 5kg, 2 kg and 7 kg are aligned in a straight line as shown below. Find the net gravitational force on 4 kg? [5 MARKS] |
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Answer» State the universal law of gravitation. Three masses 5kg, 2 kg and 7 kg are aligned in a straight line as shown below. Find the net gravitational force on 4 kg? [5 MARKS] 
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| 5916. |
Respected sir or mam A bullet is fired vertically upwards with an initial velocity of 50m per second .it covers a distance h1 during the first second and a distance h2 during the last 3seconds of its upward motion.if g=10m per second square ,how h1 and h2 related to each other |
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Answer» Respected sir or mam A bullet is fired vertically upwards with an initial velocity of 50m per second .it covers a distance h1 during the first second and a distance h2 during the last 3seconds of its upward motion.if g=10m per second square ,how h1 and h2 related to each other |
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| 5917. |
The length of resistance wire is increased by 30% by stretching it what is the corresponding change in resistance of the wire ? |
| Answer» The length of resistance wire is increased by 30% by stretching it what is the corresponding change in resistance of the wire ? | |
| 5918. |
(a) What is ultrasound ? What is the difference between ordinary sound and ultrasound ? (b) Write any three applications (or uses) of ultrasound. |
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Answer» (a) What is ultrasound ? What is the difference between ordinary sound and ultrasound ? (b) Write any three applications (or uses) of ultrasound. |
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| 5919. |
Complete the followingA. Mass(kg) Volume(m3) Density(kg/m3) 350 175 ……… ……… 190 4 B. Density of metal Density of water Relative density (kg/m3) (kg/m3) ……… 103 5 8.5 × 103 103 ……… C. Thrust (N) Area (m2) Pressure (N/m2) ……… 0.04 20000 1500 500 ……… |
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Answer» Complete the following A.
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C.
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| 5920. |
(a) What is meant by the term 'acceleration'? State the SI unit of acceleration. (b) Define the term 'uniform acceleration'. Give one example of a uniformly accelerated motion. |
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Answer» (a) What is meant by the term 'acceleration'? State the SI unit of acceleration. (b) Define the term 'uniform acceleration'. Give one example of a uniformly accelerated motion. |
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| 5921. |
The speed of sound in hydrogen at ntp is 1270 metre per second the speed in the mixture of hydrogen and oxygen in ratio for ratio 1 by volume in metre per second will be |
| Answer» The speed of sound in hydrogen at ntp is 1270 metre per second the speed in the mixture of hydrogen and oxygen in ratio for ratio 1 by volume in metre per second will be | |
| 5922. |
Using some of the expressions given above in exercise III, talk about an incident when you were very scared. You may have a competition to decide whose story was the most frightening. |
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Answer» Using some of the expressions given above in exercise III, talk about an incident when you were very scared. You may have a competition to decide whose story was the most frightening. |
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| 5923. |
पाठ में आए छंदों का गायन कर कक्षा में सुनाइए। |
| Answer» पाठ में आए छंदों का गायन कर कक्षा में सुनाइए। | |
| 5924. |
At a certain point of the circular orbit of a satellite if some mass is dropped from the satellite then 1. it will revolve in the same Orbit with the same orbital velocity in the opposite direction of satellite 2. revolve in same Orbit with same orbital velocity in same direction ofsatellite 3. mass drop to earth 4. escape from orbit linearly |
| Answer» At a certain point of the circular orbit of a satellite if some mass is dropped from the satellite then 1. it will revolve in the same Orbit with the same orbital velocity in the opposite direction of satellite 2. revolve in same Orbit with same orbital velocity in same direction ofsatellite 3. mass drop to earth 4. escape from orbit linearly | |
| 5925. |
What is the basis of grouping organisms into producers, consumer and decomposers? |
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Answer» What is the basis of grouping organisms into producers, consumer and decomposers?
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| 5926. |
Question 20 (a) Boojho planned an activity to observe an object A through pipes as shown in figure, so that he could see objects which he could not directly see. How many mirrors should he use to see the objects? |
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Answer» Question 20 (a) Boojho planned an activity to observe an object A through pipes as shown in figure, so that he could see objects which he could not directly see. |
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| 5927. |
A body falls for 5sec from rest. If the acceleration due to gravity of earth ceases to act, the distance it travels in the next 3 sec is? |
| Answer» A body falls for 5sec from rest. If the acceleration due to gravity of earth ceases to act, the distance it travels in the next 3 sec is? | |
| 5928. |
A storage battery is connected to a charger for charging with a voltage of 12.5 V. The internal resistance of the storage battery is 1Ω. When the charging current is 0.5 A, the emf of the storage battery ((in volt) is : (Give integer value) |
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Answer» A storage battery is connected to a charger for charging with a voltage of 12.5 V. The internal resistance of the storage battery is 1Ω. When the charging current is 0.5 A, the emf of the storage battery ((in volt) is : (Give integer value) |
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| 5929. |
What is the primary source of energy in our Solar System? |
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Answer» What is the primary source of energy in our Solar System? |
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| 5930. |
a body is projected from the ground with some angle to the horizontal.what happens to the angular momentum about the initial position in this motion?(1)decrease(2)increase(3)remains same |
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Answer» a body is projected from the ground with some angle to the horizontal.what happens to the angular momentum about the initial position in this motion? (1)decrease (2)increase (3)remains same |
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| 5931. |
Which among the following is not a good source of energy? |
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Answer» Which among the following is not a good source of energy? |
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| 5932. |
By bombarding light Nuclei like beryllium with the alpha particle ___ is formed. |
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Answer» By bombarding light Nuclei like beryllium with the alpha particle |
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| 5933. |
1. what is vapour density |
| Answer» 1. what is vapour density | |
| 5934. |
A uniform 50 m long horizontal rope of mass 6 kg is tightly held by two friends. One friend strikes the rope and the second one feels the effect 2 s later. The tension in the rope isA 20 NB 70 N C 35 N D 13 N |
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Answer» A uniform 50 m long horizontal rope of mass 6 kg is tightly held by two friends. One friend strikes the rope and the second one feels the effect 2 s later. The tension in the rope is A 20 N B 70 N C 35 N D 13 N |
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| 5935. |
Write three differences between work and power. [3 MARKS] |
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Answer» Write three differences between work and power. [3 MARKS] |
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| 5936. |
Inertia is the tendency of undisturbed object to remain at rest or in uniform linear motion but then what is resistance to the change of state of motion is that inertia or this inertia? Explain with examples |
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Answer» Inertia is the tendency of undisturbed object to remain at rest or in uniform linear motion but then what is resistance to the change of state of motion is that inertia or this inertia? Explain with examples |
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| 5937. |
The following graph shows the change of a car's speed with time. How far did the car travel (in m) before it reached a constant speed?100 |
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Answer» The following graph shows the change of a car's speed with time. How far did the car travel (in m) before it reached a constant speed?
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| 5938. |
What name is given to sound waves of frequencies higher than 20 kHz? |
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Answer» What name is given to sound waves of frequencies higher than 20 kHz? |
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| 5939. |
A particle is thrown vertically up such that distance travelled by it in 2nd second and 9th second is same. Maximum height upto which the particle rises is (g 10 m/s2) |
| Answer» A particle is thrown vertically up such that distance travelled by it in 2nd second and 9th second is same. Maximum height upto which the particle rises is (g 10 m/s2) | |
| 5940. |
In the experiment on simple pendulum, it is found that the time period of oscillation is directly proportional to its effective length. What conclusion do you draw about the shape of the curve obtained from the graph? |
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Answer» In the experiment on simple pendulum, it is found that the time period of oscillation is directly proportional to its effective length. What conclusion do you draw about the shape of the curve obtained from the graph? |
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| 5941. |
A man of mass M s†an ds at one end of a plank of length L which is at rest on a frictionless horizontal surface. The man walks to the other end of the plank. If mass of the plank is M/3, the dis†an ce that the man moves relative to ground is?A man of mass M s†an ds at one end of a plank of length L which is at rest on a frictionless horizontal surface. The man walks to the other end of the plank. If mass of the plank is M/3, the dis†an ce that the man moves relative to ground is? |
| Answer» A man of mass M s†an ds at one end of a plank of length L which is at rest on a frictionless horizontal surface. The man walks to the other end of the plank. If mass of the plank is M/3, the dis†an ce that the man moves relative to ground is?A man of mass M s†an ds at one end of a plank of length L which is at rest on a frictionless horizontal surface. The man walks to the other end of the plank. If mass of the plank is M/3, the dis†an ce that the man moves relative to ground is? | |
| 5942. |
Which of the following is not a characteristic of an ideal fuel? |
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Answer» Which of the following is not a characteristic of an ideal fuel? |
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| 5943. |
A ball of mass 100 g is moving with a velocity of 40 ms−1. When a constant force is applied to it, it's velocity reaches 70 ms−1. Then which of the following is correct. |
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Answer» A ball of mass 100 g is moving with a velocity of 40 ms−1. When a constant force is applied to it, it's velocity reaches 70 ms−1. Then which of the following is correct. |
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| 5944. |
20.If we have two objects of different masses one is 50 kg and another one is 200 kg having same kinetic energy. Which one has greater momentum ? |
| Answer» 20.If we have two objects of different masses one is 50 kg and another one is 200 kg having same kinetic energy. Which one has greater momentum ? | |
| 5945. |
The velocity of an object is given as v = 2t + 3t2, starting from x = 0 at t = 0, its position at t = 3 s is |
| Answer» The velocity of an object is given as v = 2t + 3t2, starting from x = 0 at t = 0, its position at t = 3 s is | |
| 5946. |
A man can hear the sound of frequency : (a) 1 Hz (b) 1000 Hz (c) 200 kHz (d) 5 MHz |
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Answer» A man can hear the sound of frequency : (a) 1 Hz (b) 1000 Hz (c) 200 kHz (d) 5 MHz |
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| 5947. |
Three speed-time graphs are given below: Which graph represents the case of: (i) a cricket ball thrown vertically upwards and returning to the hands of the thrower? (ii) a trolley decelerating to a constant speed and then accelerating uniformly? |
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Answer» Three speed-time graphs are given below:
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| 5948. |
why two different bodies of different mass fall on ground at same time from same height |
| Answer» why two different bodies of different mass fall on ground at same time from same height | |
| 5949. |
A ball is dropped from the roof of a building. It takes 10seconds to reach the ground. Find the height of the building.(g=9.8m/s2 |
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Answer» A ball is dropped from the roof of a building. It takes 10seconds to reach the ground. Find the height of the building.(g=9.8m/s2 |
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| 5950. |
Please give an example of velocity being negative. |
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Answer» Please give an example of velocity being negative. |
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