Reflection of Light Exe-7A Very Short Answer Concise Physics ICSE Class-9 Selina Publishers

Reflection of Light Exe-7A Very Short Answer Concise Physics ICSE Class-9 Selina Publishers. There is the solutions of Very short Answer type Questions of your latest textbook which is applicable in 2025-26 academic sessionVisit official Website CISCE for detail information about ICSE Board Class-9.

Reflection of Light Exe-7A Very Short Answer Concise Physics ICSE Class-9 Selina Publishers

Reflection of Light Exe-7A Very Short Answer Type

Concise Physics ICSE Class-9 Selina Publishers

Board ICSE
Class 9
Subject Physics
Writer / Publication Concise Selina Publishers
Chapter-7 Reflection of Light
Exe-7A Laws of Reflection
Topics Solution of Exe-7(A) Very Short Answer Type
Academic Session 2025-2026

Exercise- 7A Laws of Reflection

page -170

Very Short Answer : 

Que-1: State the luminous object(s) from the following: Sun, Moon, Earth, Shooting star, Fire

Ans: Sun, Shooting star and fire are the answer.

Que-2: What do you mean by reflection of light?

Ans:  The return of light into the same medium after striking a surface is called reflection.

Que-3: State which surface of a plane mirror reflects most of the light incident on it: the front smooth surface or the back silvered surface.

Ans:  Black silvered surface reflects most of the light incident on it.

Que-4: A light ray is incident normally on a plane mirror.

(a) What is its angle of incidence?
(b) What is the direction of reflected ray? Show it on a diagram.

Ans:  (a)- Angle of incidence is 0o.
(b)- Same as the incident ray

 What is the direction of reflected ray? Show it on a diagram.

Que-5: For a ray reflected on a plane mirror, find the ratio pf sin i / sin r.

Ans: sin i / sin r = constant so, the ratio of sin i/sin r is 1.

Que-6: Light from a torch is reflected by a white sheet of paper and a black polished mica sheet. Which of the two will produce a strong reflected beam?

Ans:  Black mica sheet produce a strongest reflected beam.

Que-7: A light ray strikes a mirror and retraces its path. What is the angle of incidence and angle of reflection?

Ans:  Angle of incidence is equal to angle of reflection is 0o

—  end Reflection of Light Exe-7A Very Short Answer Concise Physics ICSE Class-9 Selina Publishers : —

Return to :-  Concise Selina Physics ICSE Class-9 Solutions

Thanks

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

error: Content is protected !!