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Sun rays can ...

Question

Sun rays can be trapped for further use by :

A

keeping water on the roof

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B

by making hole in the roof in such a manner that light falls on the mirror kept at

45^{0}

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C

using photovoltaic cells

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D

all of the above

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Solution

The correct option is C using photovoltaic cells
In other two (option A and B) solar energy trapped cant be used, but in photovoltaic cells it can be used as solar energy

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