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प्रश्न
State two disadvantages of producing electricity from solar energy.
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उत्तर
Disadvantages of using solar panels:
1. The initial cost of a solar panel is sufficiently high.
2. The efficiency of conversion of solar energy to electricity is low.
3. A solar panel produces d.c. electricity which cannot be directly used for many household purposes.
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.
Give one relevant example for the following transformation of energy:
Electrical energy to heat energy.
Select the renewable and non-renewable sources of energy from the following:
Diesel
Name three non-renewable sources of energy.
What kind of energy is possessed in a situation when?
Water stored in dams.
What kind of energy is possessed in a situation when?
A stone, in a stretched catapult.
Give one example when:
Light energy changes to chemical energy.
Show that in case of a body falling freely under gravity, total mechanical energy remains conserved (neglect air resistance).
Obtain an expression for the kinetic energy of a body of mass m moving with a velocity v?
Ocean thermal energy is due to
