Selina solutions

Selina solutions

Grade 7

Light energy | Objective Questions

Question 1

Q1) Write true or false for each statement :

(a) The image formed by a plane mirror is real.

(b) When a light ray is reflected from a wall, the angle of incidence is not equal to the angle of reflection.

(c) The image of the right hand in a plane mirror looks like that of a left hand.

(d) The image formed by a plane mirror is upright.

(e) The image formed by a plane mirror can be obtained on a screen

(f) The objects are seen around us due to irregular reflection of light

(g) The speed of light in vacuum is 3 108 ms-1.

(h) A rose appears red in light of all the colours.

(i) A black paper absorbs light of all the colours and reflects none.

(j) The primary colours are red, blue and green.

Solution :

(a) False

(b) False

(c) True

(d) True

(e) False

(f) False

(g) True

(h) False

(i) True

(j) True

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subject-cta

Question 1

Q1) Write true or false for each statement :

(a) The image formed by a plane mirror is real.

(b) When a light ray is reflected from a wall, the angle of incidence is not equal to the angle of reflection.

(c) The image of the right hand in a plane mirror looks like that of a left hand.

(d) The image formed by a plane mirror is upright.

(e) The image formed by a plane mirror can be obtained on a screen

(f) The objects are seen around us due to irregular reflection of light

(g) The speed of light in vacuum is 3 108 ms-1.

(h) A rose appears red in light of all the colours.

(i) A black paper absorbs light of all the colours and reflects none.

(j) The primary colours are red, blue and green.

Solution :

(a) False

(b) False

(c) True

(d) True

(e) False

(f) False

(g) True

(h) False

(i) True

(j) True

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Book a free class now

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subject-cta
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