EASY
7th ICSE
IMPORTANT
Earn 100

An object can work more than the energy it possesses.

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Important Questions on Energy

EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 10
Energy transformation occurs in many activities that we do in our day-to-day life.
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 11
Kinetic energy has magnitude and direction.
EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 1

Name the devices or machines which convert:

Electrical energy into mechanical energy.

EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 4
Name the devices or machines which converts chemical energy into heat energy.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 1

Differentiate between: Kinetic energy and potential energy

EASY
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 1
Define work.
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 2
What are the quantities on which the amount of work done depends? How are they related to work?
MEDIUM
7th ICSE
IMPORTANT
Lakhmir Singh's Science Physics>Chapter 3 - Energy>EXERCISES>Q 3
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.