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Solar Cooker

What is the r...

Question

Question 19
What is the role of a plane mirror and a glass sheet in a solar cooker?

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Solution

The plane mirror is used in a solar cooker because it reflects most of the light falling on it towards the inner portion of the black box.
A glass sheet is used in a solar cooker because the sun rays pass through the glass sheet cover and get absorbed inside the cooker box. It traps more and more heat rays of the sun, thus heating the food item.

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Question 19
What is the role of a plane mirror and a glass sheet in a solar cooker?

Q. (a)What is the role of a plane mirror and a glass sheet in a solar cooker.
(b) Why is energy of water flowing in a river considered to be an indirect form of solar energy ?
(c) Why is nuclear fusion reaction considered better.

Q. Question 9
Which part of the solar cooker is responsible for greenhouse effect?

(a) Coating with black colour inside the box
(b) Mirror
(c) Glass sheet
(d) Outer cover of the solar cooker

Why is glass sheet used in a solar cooker?

Q. A solar cooker may not cook food if

(a) the solar cooker is not placed in the shade
(b) the glass sheet cover of solar cooker is not closed
(c) a convex mirror reflector is not used
(d) the food containers of insulting material are not used

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