HARD
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What type of energy transformation occurs in a loudspeaker?

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Important Questions on Work, Energy and Power

EASY
Which of the following is an example of chemical energy?
MEDIUM

What is generated in a solar cell, when sunlight strikes the semiconductor material?

HARD
What happens to kinetic energy if the velocity of an object is doubled?
EASY
What form of energy is possessed by a hot cup of tea?
MEDIUM
Which of the following devices converts chemical energy to electrical energy?
HARD
Which type of energy transformation occurs when a car brakes to stop?
MEDIUM
Which of the following energy transformation takes place in a photo cell?
EASY
Which of the following best describes potential energy?
MEDIUM

Which two methods are commonly used to convert solar energy into electrical energy?

MEDIUM
Which energy transformation takes place in an electric bulb?
MEDIUM
Which form of energy is stored in a stretched rubber band?
HARD
What is the primary energy transformation in a solar panel?
MEDIUM

Which one of the following principles is used for directly generating an electric current using sunlight?

HARD
Which energy transformation occurs in photosynthesis?
EASY

The _____ energy stored in the wood gets converted into heat and light energies when it is burnt.

EASY
Which type of energy is produced by the movement of electric charges?
HARD
What type of energy transformation occurs in a windmill?
EASY
What happens to the total mechanical energy in an ideal system?