# Laws Of Reflection

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Fizikf4
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Questions: 9 | Attempts: 2,854

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Simple quiz to test understanding of Laws of reflection.

Question 1 to 7 are based this diagram

• 1.

### What is line a ?

• A.

Incident ray

• B.

Reflected ray

• C.

Normal

• D.

Mirror

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

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

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

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

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 30o , the value of θ2  is ___o .

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

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• 7.

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

40
Explanation
angle if reflection is θ3 angle of reflection = angle of incidence = (90 -50)

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• 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

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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• 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

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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• Current Version
• Feb 04, 2024
Quiz Edited by
ProProfs Editorial Team
• Dec 23, 2009
Quiz Created by
Fizikf4

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