Laws Of Reflection

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| By Fizikf4

Fizikf4

Community Contributor

Quizzes Created: 1 | Total Attempts: 2,891

Questions: 9 | Attempts: 2,891 | Updated: Feb 4, 2024

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Simple quiz to test understanding of Laws of reflection.

Question 1 to 7 are based this diagram

Questions and Answers

1.

What is line a ?
- A.
  
  Incident ray
- B.
  
  Reflected ray
- C.
  
  Normal
- D.
  
  Mirror
Correct Answer
A. Incident ray

Explanation
Incident ray is the incoming light ray.

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2.

What is line b ?
- A.
  
  Incident ray
- B.
  
  Reflected ray
- C.
  
  Normal
- D.
  
  Mirror
Correct Answer
C. Normal

Explanation
The normal is an imaginary line perpendicular to the surface.

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3.

What is line c ?
- A.
  
  Incident ray
- B.
  
  Reflected ray
- C.
  
  Normal
- D.
  
  Mirror
Correct Answer
B. Reflected ray

Explanation
Reﬂected ray is the light ray moving away from the surface .

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4.

Which angle is angle of incidence ?
- A.
  
  θ1
- B.
  
  θ2
- C.
  
  θ3
- D.
  
  θ4
Correct Answer
B. θ2

Explanation
The angle of incidence, θi is measured between the incident ray and the normal.

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5.

Which angle is angle of reflection ?
- A.
  
  θ1
- B.
  
  θ2
- C.
  
  θ3
- D.
  
  θ4
Correct Answer
C. θ3

Explanation
The angle of reﬂection, θr is measured between the reﬂected ray and the normal.

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6.

If θ1 is 30^o , the value of θ₂ is ___^o .

Correct Answer
60

Explanation
θ2 = 90 - θ1
= 90 - 30
= 60

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1
4 0
7.

If θ1 is 50^o, calculate angle of reflection .

Correct Answer
40

Explanation
angle if reflection is θ3 angle of reflection = angle of incidence = (90 -50)

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5
4 8
8.

An apple is 5 m apart to the mirror, what is the image distance from the mirror ?Question 8 and 9 are based on this diagram.
- A.
  
  Less that 5 m
- B.
  
  5 m
- C.
  
  More then 5 m
Correct Answer
B. 5 m

Explanation
the distance of the image from the plane mirror is the same as the distance of the object.

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3
1
9.

A boy move the apple 2 m towards to the mirror, from 5m, what is the new distance of image to the object ?
- A.
  
  2 m
- B.
  
  3 m
- C.
  
  4 m
- D.
  
  5 m
- E.
  
  6 m
Correct Answer
E. 6 m

Explanation
distance of image to the object is (d + d') new d = 5-2 = 3 m d= d' = 3m therefore d+d' = 3+3 = 6m

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8
0

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Current Version
Feb 04, 2024

Quiz Edited by
ProProfs Editorial Team
Dec 23, 2009

Quiz Created by
Fizikf4

Laws Of Reflection

What is line a ?

What is line b ?

What is line c ?

Which angle is angle of incidence ?

Which angle is angle of reflection ?

If θ1 is 30o , the value of θ2 is ___o .

If θ1 is 50o, calculate angle of reflection .

An apple is 5 m apart to the mirror, what is the image distance from the mirror ?Question 8 and 9 are based on this diagram.

A boy move the apple 2 m towards to the mirror, from 5m, what is the new distance of image to the object ?

If θ1 is 30^o , the value of θ₂ is ___^o .

If θ1 is 50^o, calculate angle of reflection .