Energy Interview Questions

Q: Two particles are seen to collide and move jointly together after the collision. During such a collision, for the total system,

The correct answer is Linear momentum is conserved, but not the mechanical energy

Q: When a body moves with a constant speed along a circle

The correct answer is No work is done on it

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Total Questions: 5

1. A boy carrying a box on his head is walking on a level load from one place to another on a straight road is doing no work. The statement is

A. Correct

B. Incorrect

C. Partly correct

D. Insufficient data

Correct Answer is : Correct

2. Momentum is conserved in all collisions but not kinetic energy.

A. TRUE

B. FALSE

Correct Answer is : TRUE

3. Two particles are seen to collide and move jointly together after the collision. During such a collision, for the total system,

A. Neither the mechanical energy nor the linear momentum is conserved

B. Mechanical energy is conserved, but not the linear momentum

C. Both the mechanical energy and the linear momentum are conserved

D. Linear momentum is conserved, but not the mechanical energy

Correct Answer is : Linear momentum is conserved, but not the mechanical energy

4. In elastic collision, 100% energy transfer takes place when

A. m1=2m2

B. m1 is greater than m2

C. m1 is lesser than m2

D. m1=m2

Correct Answer is : m1=m2

5. When a body moves with a constant speed along a circle

A. No work is done on it

B. No acceleration is produced in it

C. Its velocity remains constant

D. No force acts on it

Correct Answer is : No work is done on it

Energy interview questions