Lakhmir Singh & Manjit Kaur - Physics

Book: Lakhmir Singh & Manjit Kaur - Physics

Chapter: 3. Sources of Energy

Subject: Physics - Class 10th

Q. No. 27 of Long Answer Type Questions-Pg-141

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27

Why is the solar cooker box painted black from inside?

As we know that dark colors are a good conductor of heat. Therefore to absorb a large amount of heat solar cookers are painted black.


Chapter Exercises

Very Short Answer Type Questions-Pg-121
Very Short Answer Type Questions-Pg-130
Very Short Answer Type Questions-Pg-140
Very Short Answer Type Questions-Pg-148
Very Short Answer Type Questions-Pg-156
Very Short Answer Type Questions-Pg-161
Short Answer Type Questions-Pg-122
Short Answer Type Questions-Pg-131
Short Answer Type Questions-Pg-140
Short Answer Type Questions-Pg-148
Short Answer Type Questions-Pg-157
Short Answer Type Questions-Pg-161
Questions Based on High Order Thinking Skills (HOTS)-Pg-123
Questions Based on High Order Thinking Skills (HOTS)-Pg-132
Questions Based on High Order Thinking Skills (HOTS)-Pg-142
Questions Based on High Order Thinking Skills (HOTS)-Pg-150
Questions Based on High Order Thinking Skills (HOTS)-Pg-159
Long Answer Type Questions-Pg-122
Long Answer Type Questions-Pg-131
Long Answer Type Questions-Pg-141
Long Answer Type Questions-Pg-149
Long Answer Type Questions-Pg-157
Multiple Choice Questions (MCQs)-Pg-122
Multiple Choice Questions (MCQs)-Pg-131
Multiple Choice Questions (MCQs)-Pg-141
Multiple Choice Questions (MCQs)-Pg-149
Multiple Choice Questions (MCQs)-Pg-158
Multiple Choice Questions (MCQs)-Pg-161

More Exercise Questions

26

What is hydro electricity? Explain the basic principle of generation of hydroelectricity with the help of a labeled diagram.
26

State two advantage of producing hydroelectricity.
26

State two disadvantage of producing hydroelectricity.
27

With the help of a labeled diagram, explain the construction and working of a solar cooker.
27

Why is the solar cooker box painted black from inside?
27

Why is the solar cooker box covered with a glass sheet?
28

What is wind? What type of energy is possessed by wind?
28

Explain how, wind energy can be used to generate electricity. Illustrate your answer with the help of a labeled diagram.
28

State two advantage of using wind energy for generating electricity.
28

Mention two limitations of wind energy for generating electricity.

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