Multiple choice question XXV — task. Science CBSE, Class 10.

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1. Choose the correct statement

Sun is an inexhaustible source of energy
There is infinite storage of fossil fuel inside the earth
Hydro and wind energy plants are non polluting sources of energy
Waste from a nuclear power plant can be easily disposed off

2. The efficiency of the solar cooker can be mcreased by placing a –

Plane mirror
Convex mirror
Convex lens
Concave lens

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