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Q.

Angle of incidence is equal to the angle of reflection. This is true:


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a

Always

b

Sometimes

c

Under special condition

d

Never 

answer is A.

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Detailed Solution

Concept: In this question , we will discuss the laws of reflection.
So, we know that the law of reflection states that the angle of incident is always equal to the angle of reflection. But there is some misconception that in case of rough surface this law is not being followed.
Actually in case of rough surface angle of reflection and angle of incident may look to be equal because of the surface roughness but in reality the normal between the angle of incident and Reflection shifts that's why it makes it follow the laws of reflection.
Making it a Universal fact that angle of reflection is always equal to angle of incident.
Hence, option (1) is correct.
 
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Angle of incidence is equal to the angle of reflection. This is true: