Q4 of 51 Page 426

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

During the winding of the spring of a clock, the kinetic energy gets converted into stored potential energy of the spring.

Name any two devices used to harness solar energy.

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

In many applications, solar cells are connected to rechargeable batteries. Why is it so?

How is the increase in demand for energy affecting our environment adversely?

Questions · 51

14. Source of Energy

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