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Class 9 Physics — Online Test

Chapter 6: Work and Energy

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📋 Instructions: Select one answer for each question, then click Submit Test at the bottom to see your score and correct answers.

Q1 Work done is zero when force and displacement are:

Parallel Anti-parallel Perpendicular At 45°

Q2 The SI unit of work is:

Newton Watt Joule Pascal

Q3 Kinetic energy of a body depends on:

Mass only Speed only Both mass and speed Neither

Q4 Potential energy is energy stored due to:

Motion Position or state Temperature Pressure

Q5 The formula for kinetic energy is:

mgh ½mv² mv Fs

Q6 Power is defined as:

Work × time Work / time Force × time Force / time

Q7 The SI unit of power is:

Joule Newton Watt Pascal

Q8 Law of conservation of energy: energy can be:

Created Destroyed Converted but not created or destroyed Both created and destroyed

Q9 1 kilowatt-hour (kWh) is equal to:

1000 J 3.6×10⁶ J 3600 J 1000 W

Q10 Efficiency of a machine is always:

Greater than 100% Equal to 100% Less than 100% Zero

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