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A ray from a fixed object is incident on a plane mirror at an angle of 20o. If the ...

A ray from a fixed object is incident on a plane mirror at an angle of 20o. If the mirror is rotated through 30o by how many degree would the reflected ray rotate?
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  • A 60o
  • B 50o
  • C 40o
  • D 30o
Correct Answer: Option A
Explanation:

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