Light (Practice Sheet, Class 7)

(1) How will you identify convex lens and concave lens?

Solution-

(2) Give two uses of concave mirror.

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(3) Give characteristics of image of an object formed by a convex mirror.

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(4) Give two differences of image formed by concave and convex mirror.

Solution-

(5) Which lens/mirror is used in giving things-

(i) Magnifying lens

(ii) Makeup

(iii) Side view mirror

(iv) Binocular

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(6) What do you understand by erect? Which mirrors/lenses give erect image?

Solution-

(7) Fill in the blanks:

(i)A plane mirror give always …….. Image.

(ii) ………. image can be formed on screen.

(iii)A rainbow has ……… colours.

Solution-

(8) Name the colours of white light.

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(9) Can water act as a mirror? Give an example in favour of your answer.

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(10) Does light travel along straight line? Give proof in support of your answer.

Solution-

Helping Topics

Light

NCERT solutions

Picture1

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