Question

When the angle of incidence is 60 degree, the angle of reflection is ______________.​

Answer 1

30 degrees

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Answer 2

• The angle of incidence and reflection are the same. The normal is used to calculate both angles.
• The normal is an imaginary line that intersects the plane mirror at a right angle.
• When sound waves strike smooth surfaces, they produce loud echoes, and when light waves strike them, they can behave like mirrors.
• As we have 60 degrees is the angle of incidence,
• So, The angle of reflection $= 90 -60 = 30$ degrees.
• Since the angle of incidence equals the angle of reflection, the angle of incidence is 30 degrees.