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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify. |
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Answer» The average speed of a moving body can never be zero but the average velocity of a moving body can be zero. Justify. |
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| 2. |
In a discuss throw sports event the athlete begin in a circular motion and then releases it. why does it move in a straight line after releasing? |
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Answer» In a discuss throw sports event the athlete begin in a circular motion and then releases it. why does it move in a straight line after releasing? |
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| 3. |
For a screw gauge, the distance moved by the tip of the screw for a rotation of one division on the head scale is called |
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Answer» For a screw gauge, the distance moved by the tip of the screw for a rotation of one division on the head scale is called |
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| 4. |
Which of the following is based on the mean distance of the centre of the Sun from the centre of the Earth? |
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Answer» Which of the following is based on the mean distance of the centre of the Sun from the centre of the Earth? |
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| 5. |
Work done by a body is |
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Answer» Work done by a body is |
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| 6. |
I know what is the definition of interia but what "causes" it ?? |
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Answer» I know what is the definition of interia but what "causes" it ?? |
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| 7. |
An object starting from rest travels 20 m in first 2 seconds and 160 m in next 4 seconds. What will be the velocity after 7 seconds from the start? |
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Answer» An object starting from rest travels 20 m in first 2 seconds and 160 m in next 4 seconds. What will be the velocity after 7 seconds from the start? |
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| 8. |
Why is speed of sound taken as wavelength by timeperiod and not the total distance covered by a single wave by the total time taken to cover that distance. Please explain in terms of wavelength? |
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Answer» Why is speed of sound taken as wavelength by timeperiod and not the total distance covered by a single wave by the total time taken to cover that distance. Please explain in terms of wavelength? |
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| 9. |
give an example when acceleration is against the direction of motion. does velocity of a body remain constant during free fall ?why or why not. |
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Answer» give an example when acceleration is against the direction of motion. does velocity of a body remain constant during free fall ?why or why not. |
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| 10. |
A vernier callipers has its main scale graduated in mm and 10 divisions on its vernier scale are equal in length to 9 mm. When the two jaws are in contact, the zero of vernier scale is ahead of zero of main scale and 3rd division of vernier scale coincides with a main scale division. Find : (i) the least count and (ii) the zero error of the vernier callipers. |
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Answer» A vernier callipers has its main scale graduated in mm and 10 divisions on its vernier scale are equal in length to 9 mm. When the two jaws are in contact, the zero of vernier scale is ahead of zero of main scale and 3rd division of vernier scale coincides with a main scale division. Find : (i) the least count and (ii) the zero error of the vernier callipers. |
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| 11. |
A body X is in thermal equilibrium with Y and Y is in thermal equilibrium with Z, then |
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Answer» A body X is in thermal equilibrium with Y and Y is in thermal equilibrium with Z, then |
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| 12. |
In the figure given below, the amplitude of the simple pendulum is the shortest distance between the points __ and __. |
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Answer» In the figure given below, the amplitude of the simple pendulum is the shortest distance between the points
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| 13. |
As a rocket is fired from a launch pad, its speed and acceleration increase with time as its engines continue to operate. Explain why this occurs even though the thrust of the engines remains constant. |
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Answer» As a rocket is fired from a launch pad, its speed and acceleration increase with time as its engines continue to operate. Explain why this occurs even though the thrust of the engines remains constant. |
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| 14. |
Why less amount of water boils before the one having more amount of water? |
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Answer» Why less amount of water boils before the one having more amount of water? |
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| 15. |
Why work is scalar quantity ? In formula it uses force which is vector quantity and displacement which is a part of vector quantity, then why work is scalar quantity ? |
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Answer» Why work is scalar quantity ? In formula it uses force which is vector quantity and displacement which is a part of vector quantity, then why work is scalar quantity ? |
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| 16. |
A particle of mass m is projected with a velocity v making an angle 45 degree with the horizontal. The magnitude of the angular momentum of the projectile about the pointof projection when the particle is at its max height h. |
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Answer» A particle of mass m is projected with a velocity v making an angle 45 degree with the horizontal. The magnitude of the angular momentum of the projectile about the pointof projection when the particle is at its max height h. |
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| 17. |
What is kinetic energy? |
| Answer» What is kinetic energy? | |
| 18. |
Why a bucket of water weighs lighter inside the well than when it is outside the water |
| Answer» Why a bucket of water weighs lighter inside the well than when it is outside the water | |
| 19. |
A girl starts from point A goes to O then to B. She then returns to A following a circular track. What is the distance covered and displacement of the girl? Given: OA = OB = 15 m and length of circular track AB = 80 m. |
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Answer» A girl starts from point A goes to O then to B. She then returns to A following a circular track. What is the distance covered and displacement of the girl? |
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| 20. |
The source of energy in an ecosystem is : (a) sun (b) decayed bodies (c) green plants (d) sugar. |
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Answer» The source of energy in an ecosystem is : (a) sun (b) decayed bodies (c) green plants (d) sugar. |
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| 21. |
can a body have constant acceleration but zero velocity |
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Answer» can a body have constant acceleration but zero velocity |
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| 22. |
What is the meaning of the notation 'Kgwt'? Please give an example too. |
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Answer» What is the meaning of the notation 'Kgwt'? Please give an example too. |
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| 23. |
A bullet of 5 g is fired from a pistol of 1.5 kg. If the recoil velocity of a pistol is 1.5 m/s. What is the velocity of the bullet? |
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Answer» A bullet of 5 g is fired from a pistol of 1.5 kg. If the recoil velocity of a pistol is 1.5 m/s. What is the velocity of the bullet? |
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| 24. |
If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height. |
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Answer» If the upward direction is taken as positive what is the sign of velocity and acceleration when a body falls freely from a height. |
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| 25. |
At a moment in a progressive wave, the phase of a particle executing S.H.M. is π3. Then the phase of the particle 15 cm ahead and at the time T2 will be, if the wavelength is 60 cm |
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Answer» At a moment in a progressive wave, the phase of a particle executing S.H.M. is π3. Then the phase of the particle 15 cm ahead and at the time T2 will be, if the wavelength is 60 cm |
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| 26. |
What do you mean by zero error? Explain the different types of zero errors. |
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Answer» What do you mean by zero error? Explain the different types of zero errors. |
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| 27. |
Which is incorrect statement about action and reaction forces: |
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Answer» Which is incorrect statement about action and reaction forces: |
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| 28. |
How much work is needed to be done on a ball of mass 50 g to give it a momentum of 5 kg m s−1? |
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Answer» How much work is needed to be done on a ball of mass 50 g to give it a momentum of 5 kg m s−1? |
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| 29. |
A body falls from a height of 500 m. In how much time, will it strike the ground ? (Give the answer in seconds) |
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Answer» A body falls from a height of 500 m. In how much time, will it strike the ground ? (Give the answer in seconds) |
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| 30. |
A light and a heavy object have the same momentum. Which one of the following statements is correct regarding the kinetic energy of these two objects? |
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Answer» A light and a heavy object have the same momentum. Which one of the following statements is correct regarding the kinetic energy of these two objects? |
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| 31. |
Which of the following is equivalent to 1 pascal? |
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Answer» Which of the following is equivalent to 1 pascal? |
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| 32. |
A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall? (g=9.8 m/s2) |
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Answer» A stone is thrown vertically upwards with a speed of 20 m/s. How high will it go before it begins to fall? (g=9.8 m/s2) |
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| 33. |
What is Distance |
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Answer» What is Distance |
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| 34. |
An object is thrown in vertically upward direction. Which of the following velocity-time graph is appropriate for it? (Consider gravity to be acting in negative y-direction) |
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Answer» An object is thrown in vertically upward direction. Which of the following velocity-time graph is appropriate for it? (Consider gravity to be acting in negative y-direction) |
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| 35. |
Is displacement greater than distance? |
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Answer» Is displacement greater than distance? |
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| 36. |
Body of mass 5 kg moves in a straight line withacceleration of 2 metre per second square find the change in momentum of the body in 2 seconds |
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Answer» Body of mass 5 kg moves in a straight line withacceleration of 2 metre per second square find the change in momentum of the body in 2 seconds |
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| 37. |
Why is water wet? |
| Answer» Why is water wet? | |
| 38. |
Aracing car ahasauniform accleration of 4ms-2 what distance will cover in 10s after start |
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Answer» Aracing car ahasauniform accleration of 4ms-2 what distance will cover in 10s after start |
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| 39. |
The figure above shows distance-time graphs of two objects X and Y. Which object is moving with greater speed? |
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Answer»
The figure above shows distance-time graphs of two objects X and Y. Which object is moving with greater speed? |
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| 40. |
An archer shoots an arrow. Consider the action force to be the bow string against the arrow. The reaction force is the: |
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Answer» An archer shoots an arrow. Consider the action force to be the bow string against the arrow. The reaction force is the: |
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| 41. |
Use the following information to answer the next question. Jaikishan and Arun are pushing each other as shown in the given figure. Jaikishan’s push is weaker than that of Arun. As a result, they move in the direction shown in the figure. Jaikishan and Arun move in the given direction because of |
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Answer» Use the following information to answer the next question. Jaikishan and Arun are pushing each other as shown in the given figure. Jaikishan’s push is weaker than that of Arun. As a result, they move in the direction shown in the figure.
Jaikishan and Arun move in the given direction because of |
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| 42. |
A particle of mass 10 gm is describing S.H.M. along a straight line with period of 2 sec and amplitude of 10 cm. Its kinetic energy when it is at 5 cm from its equilibrium position is |
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Answer» A particle of mass 10 gm is describing S.H.M. along a straight line with period of 2 sec and amplitude of 10 cm. Its kinetic energy when it is at 5 cm from its equilibrium position is |
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| 43. |
An object is put one after the other in three liquids having different densities. The object floats with 19, 211 and 37 parts of their volumes outside the liquid surface in liquids of densities d1, d2 and d3 respectively. Which of the following statement is correct? |
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Answer» An object is put one after the other in three liquids having different densities. The object floats with 19, 211 and 37 parts of their volumes outside the liquid surface in liquids of densities d1, d2 and d3 respectively. Which of the following statement is correct? |
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| 44. |
The non contact force is : (a) force of reaction (b) force due to gravity (c) tension in string (d) force of friction |
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Answer» The non contact force is : |
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| 45. |
When the potentials of two ends of a wire differ by 10 volts, the current flowing between the two ends is recorded as 2mA. What is the resistance offered by the wire? |
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Answer» When the potentials of two ends of a wire differ by 10 volts, the current flowing between the two ends is recorded as 2mA. What is the resistance offered by the wire? |
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| 46. |
Two mutually perpendicular forces are acting on a moving object. One force acts in the direction of motion of the object and the other force acts perpendicular to the direction of motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J and the direction of motion is unaffected. The work done by the force acting perpendicular to the direction of the motion is: |
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Answer» Two mutually perpendicular forces are acting on a moving object. One force acts in the direction of motion of the object and the other force acts perpendicular to the direction of motion. During this interval, the kinetic energy of the body changes from 25 J to 100 J and the direction of motion is unaffected. The work done by the force acting perpendicular to the direction of the motion is: |
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| 47. |
Explain the term induced magnetisum. |
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Answer» Explain the term induced magnetisum. |
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| 48. |
Why ships float in water? |
| Answer» Why ships float in water? | |
| 49. |
The hour hand of a clock is 4 cm long. What is the distance and displacement that its tip would cover in 12 hours? |
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Answer» The hour hand of a clock is 4 cm long. What is the distance and displacement that its tip would cover in 12 hours? |
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| 50. |
How does energy get wasted by sitting without working |
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Answer» How does energy get wasted by sitting without working |
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