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प्रश्न
Name the device or machine which convert :
Electrical energy into light energy.
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उत्तर
An electric bulb converts electrical energy into light energy.
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संबंधित प्रश्न
A pendulum is oscillating on either side of its rest position. The correct statement is:
A stone of mass 500 g is thrown vertically upwards with a velocity of 15 m/s. Calculate:
- the potential energy at the greatest height,
- the kinetic energy on reaching the ground, and
- the total energy at its half-way point.
State whether the object possess kinetic energy, potential energy, or both :
A bird running on the ground ____________.
What kind of energy is possessed by the following?
A stone kept on roof-top _______________
What kind of energy is possessed by the following?
A running car ____________
What kind of energy is possessed by the following?
A stretched rubber band _____________
Two bodies having equal masses are moving with uniform speeds of v and 2v respectively. Find the ratio of their kinetic energies.
Explain the transformation of energy in the following cases :
(i) A ball thrown upwards.
(ii) A stone dropped from the roof of a building.
How much electric energy in kWh is consumed by an electrical appliance of 1000 watts when it is switched on for 60 minutes?
The device which converts mechanical energy into energy which runs our microwave oven is :
