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प्रश्न
Give one disadvantage of using a solar cell.
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उत्तर
One disadvantage of solar cell is listed below:
i. The initial cost of a solar panel is sufficiently high.
संबंधित प्रश्न
Fill in the blank
An object falling freely from the roof of a multistorey building has ________ and _________ energy when halfway down the building.
How is kinetic energy possessed by a moving body measured?
Give three examples of bodies possessing potential energy.
State the energy changes which take place when:
Water stored in dams rotates turbine connected to a dynamo.
State the energy changes which take place when:
Electricity obtained from nuclear energy.
Calculate the change in the Kinetic energy of a moving body if its velocity is reduced to 1/3rd of the initial velocity.
A body of mass 0.2 kg falls from a height of 10 m to a height of 6 m above the ground. Find the loss in potential energy taking place in the body. [g = 10ms−2]
A ball of mass 200 g falls from a height of 5 m. What will be its kinetic energy when it just reaches the ground? (g = 9.8 m s−2)
A body of mass m is taken from a height h to 2h. What is the increase in its potential energy?
