Question

find out net deviation angle after two successive reflection if angle given between two plane mirrors is 30 degree​

Answer 1

Answer:

Angle of deviation in case of double reflection is given as

$$\delta =360°-2\theta \\ \quad =360°-2\left( 40° \right) \\ \quad =360°-80°\\ \quad =280°$$

Answer 2

Answer:

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