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Easy

Question

# A beam of light strikes one mirror of a right angle mirror assembly at an angle of incidence 45^{0} as shown in the figure The right angle mirror assembly is rotated such that the angle of incidence becomes 60^{0} Which of the following statements is (are) correct about the emerging light beam

- It will move through an angle of 15
^{0} with respect to the original emerging beam
- it will move through an angle of 30
^{0} with respect to the original emerging beam
- it will move through an angle of 45
^{0} with respect to the original emerging beam
- it will emerge parallel to the original emerging beam

^{0}with respect to the original emerging beam^{0}with respect to the original emerging beam^{0}with respect to the original emerging beam## The correct answer is: it will emerge parallel to the original emerging beam

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