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प्रश्न
Name the device or machine which convert :
Light energy into electrical energy.
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उत्तर
A solar cell converts light energy into electrical energy.
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संबंधित प्रश्न
A pendulum is oscillating on either side of its rest position. The correct statement is:
What kind of energy is possessed by the following?
A compressed spring ____________.
What type of energy is possessed : by the stretched rubber strings of a catapult?
A boy weighing 40 kg makes a high jump of 1.5 m.
What is his potential energy at the highest point? (g = 10 m/s2)
Name the device or machine which convert :
Electrical energy into heat energy.
Fill in the blank with suitable word:
The electricity meter installed in our homes measure electrical energy in the units of ___________.
Fill in the blanks with suitable words :
The principle of ___________ of energy says energy can be transformed from one form to another, but it cannot be ___________ or ___________.
The hanging bob of a simple pendulum is displaced to one extreme position B and then released. It swings towards centre position A and then to the other extreme position C. In which position does the bob have :
(i) maximum potential energy?
(ii) maximum kinetic energy?
A ball falls to the ground as shown below :
What is the kinetic energy of ball when it hits the ground?
Which one of the following is not the unit of energy?
