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A ray of light is incident on a plane mirror at an angle 30° with the normal at the point of incidence. The ray will be deviated from its incidence direction by what angle?
  • a)
    30°
  • b)
    60°
  • c)
    120°
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A ray of light is incident on a plane mirror at an angle 30° with ...
By law of reflection, angle of incidence i is equal to angle of reflection rTotal deviation of ray = 30° + 30° = 60°
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Most Upvoted Answer
A ray of light is incident on a plane mirror at an angle 30° with ...
Assuming that the angle is 30 degrees, we can use the law of reflection to determine the angle of reflection.

According to the law of reflection, the angle of incidence is equal to the angle of reflection. Therefore, if the angle of incidence is 30 degrees, the angle of reflection will also be 30 degrees.

So, the ray of light will be reflected back at an angle of 30 degrees.
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A ray of light is incident on a plane mirror at an angle 30° with the normal at the point of incidence. The ray will be deviated from its incidence direction by what angle?a)30°b)60°c)120°d)None of theseCorrect answer is option 'B'. Can you explain this answer?
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