Work & Energy MCQs with Answers

What is the definition of energy in physics?

• A.Force applied over a distance
• B.Rate of doing work
• C.Capacity for doing work
• D.Mass in motion

A car in motion hits and gets crashed into a tree trunk, what is NOT conserved?

• A.Momentum
• B.Total energy
• C.Kinetic energy alone
• D.Total mass

Centripetal force performs _?

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

When a proton and anti-proton annihilate, the energy release is ?

• A.3 × 10⁻¹⁰ J
• B.3 × 10⁻⁸ J
• C.3 × 10⁻¹² J
• D.3 × 10⁻¹⁴ J

The formula of Kinetic Energy is?

• A.K.E = 1/2 mv
• B.K.E = mgh
• C.K.E = mv
• D.K.E = 1/2 mv²

Past Paper MCQ

Potential energy and kinetic energy are types of which form of energy?

• A.Nuclear energy
• B.Thermal energy
• C.Chemical energy
• D.Mechanical energy

When angle between force and displacement is zero, the work done on body is _?

• A.Maximum
• B.Minimum
• C.Zero
• D.Negative

A 100 Kg car can accelerate from rest to speed of 25 m/sec in 10s. What average power (in kilo watts) must the engine of the car produce in order to cause this acceleration? Neglect the friction loss.

• A.3.125 kW
• B.6.250 kW
• C.31.250 kW
• D.12.500 kW

Energy possessed by a body due to its motion is called _?

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

What is potential energy?

• A.Energy of motion
• B.Energy of position
• C.Energy of heat
• D.Energy of light