A) \[{{30}^{o}},\,CW\]
B) \[{{10}^{o}},\,ACW\]
C) \[{{30}^{o}},\,ACW\]
D) \[{{10}^{o}},\,CW\]
Correct Answer: C
Solution :
[c] Due to rotation of mirror, the reflected ray will rotate by \[{{20}^{o}}\] in ACW direction and due to rotation of incident ray the reflected ray will rotated by \[{{10}^{o}}\] in ACW direction. So total rotation of reflected ray is \[{{30}^{o}},\,ACW\].
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