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If a ray makes an angle of 20° with the mirror then its angle of incidence is ____.

If a ray makes an angle of 20° with the mirror then its angle of incidence is ____.
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If a ray makes an angle of 20° with the mirror then its angle of incidence is ____.

User Kumar Aditya
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70 degrees

90 - 20 since angle of incidence is the complement of the angle it strikes with.

User XMRi
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