HARD
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In an ideal pendulum, at what point is potential energy maximum?

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Important Questions on Work, Energy and Power

HARD
Which energy transformation occurs in photosynthesis?
MEDIUM

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

HARD
What type of energy transformation occurs in a loudspeaker?
EASY
Which of the following is an example of chemical energy?
HARD
What type of energy transformation occurs in a hydropower plant?
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?
MEDIUM
Which energy transformation takes place in an electric bulb?
MEDIUM

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

HARD
What happens to kinetic energy if the velocity of an object is doubled?
HARD
In a coal-fired power plant, which energy transformation occurs first?
MEDIUM
Which of the following devices converts chemical energy to electrical energy?
MEDIUM

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

EASY
What happens to the total mechanical energy in an ideal system?
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?
EASY
What form of energy is possessed by a hot cup of tea?
MEDIUM
Which form of energy is stored in a stretched rubber band?