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प्रश्न
State the energy changes which take place when:
Photographic film is exposed to sunlight.
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उत्तर
The light energy changes to chemical energy
संबंधित प्रश्न
Name the type of energy (kinetic energy K or potential energy U) possessed in the given case:
An arrow shot out of a bow.
What is a solar cell?
How much hydroelectric power is generated in India?
Name the form of energy in which potential energy can change.
A body of mass 5 kg falls from a height of 10 m to 4 m. Calculate:
The total energy possessed by the body at any instant? (Take g = 10 ms-2).
State the energy changes which take place when:
A body released from rest from the top of a building.
State the energy changes which take place when:
In a heat engine.
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
In a hydroelectric power station, 1000 kg of water is allowed to drop through a height of 100 m in 1 sec. If the conversion of potential energy to electric energy is 60%. Calculate the power output. [Take: g = 10m/sec2]
