EASY
7th CBSE
IMPORTANT
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The distance between the optical centre and the principal focus of the lens is called its (radius of curvature / focal length).

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Important Questions on Light

EASY
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 3
The band of seven colours formed on a white screen is called _____ (dispersion / spectrum).
EASY
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 4
The splitting of a white light into seven colours is called _____ of light
EASY
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 5
_____ (Concave / Convex / Plane) mirrors are used by dentists to see enlarged image of teeth.
EASY
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 6
Convex lenses are used in _____ (magnifying glass / telescopes)
MEDIUM
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 7
_____ (Plane / Concave / Convex) mirrors are used as reflectors in torches.
EASY
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 8

A spherical mirror, whose reflecting surface is curved outwards, is called a _____  (concave / convex / plane) mirror.

MEDIUM
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 1
The image formed by the plane mirror is real and erect.
EASY
7th CBSE
IMPORTANT
SCIENCE MADE EASY>Chapter 15 - Light>EXERCISE>Q 2
Concave mirrors are used in the headlights of a car.