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प्रश्न
Fill in the blank
Green plants convert _________ energy into chemical energy.
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उत्तर
Green plants convert light energy into chemical energy.
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संबंधित प्रश्न
State the energy changes in the following case while in use:
A ceiling fan
State the energy changes that occur in the following :
Lighting of a torch bulb.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in a loaded truck when started and set in motion.
Energy can exist in several forms and may change from one form to another. State the energy changes that occur in the burning of a match stick.
State the energy changes in the following case while in use:
Washing machine
State the energy changes in the following case while in use:
An electromagnet.
Choose the odd one:
The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.
Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it.
(a) How much work is done by the men in lifting the box?
(b) How much work do they do in just holding it?
(c) Why do they get tired while holding it? (g = 10 m s–2)
The energy conversion in a washing machine is from ______.
