MEDIUM
7th CBSE
IMPORTANT
Earn 100

Determine the radius of curvature of a convex mirror shown below.

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Important Questions on Light

MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 77
Which property of light is involved in the formation of shadow? Explain in which case you will not get penumbra at all.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 78
Why is the light from the moon called cool light and the light from the sun called hot light?
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 79
During lightning and thundering, why is the lightning seen first and then the thunder heard? Explain.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 80
Distinguish between concave and convex mirrors.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 81
Write few uses of spherical mirror.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 82
What are cold and hot sources of light? Give examples for each.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 83
Explain how light helps in the growth of plants.
MEDIUM
7th CBSE
IMPORTANT
Pearson IIT Foundation Physics>Chapter 4 - Light>PRACTICE QUESTIONS (CLASSROOM WING)>Q 84
Write two phenomena which can be understood by rectilinear propagation of light.