1) the angle of deviation when the angle of incidence is zero is a) 0^0 b) 45^0 c) 90^0 d) 180^0 2) the angle of deviation when angle of incidence is 45° is a) 0^0 b) 45^0 c) 90^0 d) 180^0 3) the glancing angle when the angle of incidence is 45^0 is a) 0^0 b) 45^0 c) 90^0 d) 180^0 4) the basic laws of reflection are same for plane and curve reflecting surfaces (true or false) .
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Answer:
1. d
2. c
3. b
4. true
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