A man bought a device X which could cook pulses, vegetables and rice without using any fuel like wood, coal, kerosene or LPG, etc. This device did not work at night. It also took a lot of time for time for cooking.

1. Name the device X.
2. What is the source of energy which cooks food in this device?
3. What is the name of the process which traps energy in this device?
4. State one advantage (other than saving on fuel) of using such a device for cooking food.

(a) Device X is a solar cooker as it cooks food without using any fuel like wood, coal, kerosene or LPG.

(b) Solar energy is the source of energy which cooks food in the solar cooker.

(c) Greenhouse effect is the name of the process which traps energy in the solar cooker.

(d) The main advantage (other than saving on fuel) of using solar cooker is the formation of the pollution-free environment as solar energy is eco-friendly in nature.

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Updated on: 20-Mar-2023

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