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प्रश्न
Give one example when:
Chemical energy changes to light energy.
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उत्तर
During the burning of magnesium, chemical energy changes to light energy.
संबंधित प्रश्न
State the energy change in the following device while in use:
A glowing electric bulb.
Give one relevant example for the following transformation of energy :
Chemical energy to light energy.
State whether a solar cell produces a.c. or d.c.
Name the energy changes for the following:
bicycle brakes
Identify the type of energy possessed by the body in each of the following:
(a) A coiled spring of the toy car
(b) A hammer which is raised
(c) A stone shot from a catapult
(d) Water stored in the overhead tank
(e) A tadpole moving in water.
Show that the quantity 2K/v2 has the unit of mass, where K is the kinetic energy of the body.
A pebble is thrown up. It goes to a height and then comes back on the ground. State the different changes in form of energy during its motion.
State the energy changes which take place when:
A bulb glows, when torchlight is switched on.
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
Give one example when:
Sound energy changes to electric energy.
