Q2 of 51 Page 426

Name any two devices used to harness solar energy.

The two solar based devices which use solar energy are as follows:

1. Solar Cell

2. Solar Cooker

3. Solar Water Heater

What are the disadvantages of using nuclear power?

Justify in one sentence that hydro power (hydro electricity) is a renewable source of energy.

In parabolic reflector type cookers, even temperature up to 1800^oC-2000^o can be attained. How?

What type of energy transformation takes place during winding of spring of a clock?

Questions · 51

14. Source of Energy

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