EASY
7th CBSE
IMPORTANT
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With the help of a ray diagram, explain the Focus of convex lens.

Important Questions on Light

EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 1
With the help of a ray diagram, explain the Optical centre of a convex lens.
EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 1
With the help of a ray diagram, explain the Focal length of a convex lens.
EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 2
What is meant by dispersion of light?
MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 2
With the help of a diagram, show the dispersion of white light using a prism.
EASY
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 2
Name the natural phenomenon which is caused by the dispersion of light.
MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 3
How can you distinguish between a plane mirror, a concave mirror and a convex mirror without touching them?
MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 1
Why do in automobiles, the rear view mirrors have warning written as ‘object seen in the mirror may be closer than they appear’?
MEDIUM
7th CBSE
IMPORTANT
LEARNING SCIENCE>Chapter 15 - Light>Exercise>Q 2

A person standing 6m away from a plane mirror moves 3m towards the mirror. Can you tell the distance between the person and the image?