A man bought a device X which could cook pulses, vegetables and rice without using any fuel like wood, coal, kerosene or LPG, etc. The device did not work at night. It also took a lot of time for cooking.
(a) Name the device X.
(b) What is the source of energy which cooks food in this device ?
(c ) What is the name of the process which traps energy in this device ?
(d) State one advantage (other than saving on fuel) of using such a device for cooking food.

Options

A. Name the device X.
B. What is the source of energy which cooks food in this device?
C. What is the name of the process which traps encrgy in this device?
D. State one advantage (other than saving on fuel) of using such a device for cooking food.

Explanation

(a) Solar cooker (b) Sun (c) Greenhouse effect (d) It does not cause air pollution