EASY
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With the help of a ray diagram, explain the following terms: focus of a convex lens

Important Questions on Light

EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q J
With the help of a ray diagram, explain the following terms: optical centre of a convex lens.
HARD
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q J
With the help of a ray diagram, explain the following terms: focal length of a convex lens.
MEDIUM
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q J
What is meant by dispersion of light?
MEDIUM
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q J
With the help of a diagram, show the dispersion of white light of a prism.
EASY
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q J
Name the natural phenomena which is caused by the dispersion of light.
MEDIUM
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q J
How can you distinguish between a plane mirror, a concave mirror and a convex mirror without touching them?
MEDIUM
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q K
In automobiles, why do the rear-view mirrors have a warning written as 'objects seen in the mirror are closer than they appear'?
MEDIUM
7th CBSE
IMPORTANT
Exploring Science BASED ON THE LATEST NCF GUIDELINES 7>Chapter 15 - Light>Exercise>Q K
A person standing 6 m away from a plane mirror moves 3 m towards the mirror. Can you tell the distance between the person and the image?