Work & Energy MCQs with Answers

What type of energy does a moving cricket ball possess?

• A.Potential energy
• B.Thermal energy
• C.Chemical energy
• D.Kinetic energy

If P is the momentum of an object of mass m, then the expression P²/m has the same unit as?

• A.Force
• B.Energy
• C.Power
• D.Pressure

If the mass of the body is made 3 times and the velocity becomes double, the kinetic energy will increase how many times?

• A.6 times
• B.12 times
• C.8 times
• D.9 times

Past Paper MCQ

One horse power is equal to _?

• A.746 watt
• B.846 watt
• C.646 watt
• D.546 watt

A man pushes a wall but fails to displace it. He does _?

• A.Infinite work
• B.Positive work
• C.Negative work
• D.No work

When two protons are brought closer, the potential energy of both of them:

• A.First increases then decreases
• B.Decreases
• C.Remains the same
• D.Increases

The rotational kinetic energy of a hoop of radius r is given by:

• A.mω²r
• B.½ mv²
• C.Iω
• D.½ Iω²

A man picks up a mass of 1 kg to a height of 1 meter. What is the work done by the man?

• A.1 J
• B.100 J
• C.10 J
• D.0.1 J

In an elastic collision the total kinetic energy ?

• A.Before and after collision remains the same
• B.Is lost as heat after collision
• C.Increases after collision
• D.Is converted into potential energy

An object of mass 12 kg is lifted vertically up through a height of 5 m. The gravitational potential energy gained by the object is _?

• A.480 J
• B.600 J
• C.60 J
• D.588 J