Question

Q2. SOLAR COOKER
Kunal usually prefer using solar cookers instead of
LPG for boiling potatoes , pulses & cooking rice.
Q1 Why are solar cooker painted black?
a)Black does not allow heat to escape.
b)Black surface is good reflector of solar
radiations.
c)Black is good absorber of solar radiations.
d)Black is good radiator of solar radiations.
Q2. Why does Kunal use solar cooker instead of
LPG?
a)He does not like cooking.
b)His LPG cylinder is empty.
c) Solar energy is free of cost and does not cause
pollution.
d) LPG is very expensive nowadays.
3) Name the Phenomenon which is responsible for
obtaining high temperature in solar cooker?
a) absorption of rays.
b) total internal reflection.
c) concentration of rays.
d) greenhouse effect.
Q4 What is the motivation behind using Solar
cooker?

Answer 1

Answer:

Black is good radiator of solar radiations

Solar energy is free of cost and does not cause

pollution.

greenhouse effect.