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Question
If the angle of incidence is 30 degrees, what will be the angle X as shown in the figure ?
If the angle of incidence is 30 degrees, what will be the angle X as shown in the figure ?
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Solution
The correct option is C 60 degrees
According to the laws of reflection, the angle of reflection is equal to the angle of incidence.
So,
∠i=∠r= 30 degrees
Also,
∠r + X = 90 degrees
As ∠r = 30 degrees
X = 90 degrees - 30 degrees = 60 degrees
According to the laws of reflection, the angle of reflection is equal to the angle of incidence.
So,
∠i=∠r= 30 degrees
Also,
∠r + X = 90 degrees
As ∠r = 30 degrees
X = 90 degrees - 30 degrees = 60 degrees
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