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प्रश्न
State two advantage of producing hydroelectricity.
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उत्तर
Advantages of producing the hydroelectricity:
1. It does not produce any environmental pollution.
2. It is a renewable source of energy.
संबंधित प्रश्न
State the S.I. unit of work and define it.
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. If the value of g be 10 m/s2, the work done by the girl against the gravitational force will be :
Give two examples of couple action in our daily life.
Is power a scalar quantity?
An object is dropped from a height H. when is its
(i) P.E. maximum,
(ii) K.E. maximum,
(iii) P.E. = K.E.?
A body does 20 J of work in 10 s. What is its power?
State the energy changes which take place when An electric bulb glows when it is connected to a source of electric current.
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