a ray falling on a plane mirror makes an angle of 30 degree with it. what is the angle of incidence for the ray. class 8.. Answer. fast
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Ray AB strikes the mirror PQ at B and gets reflected along BC according to the laws of reflection. The ray BC incident on mirror QR makes an angle 30∘ with the mirror. So, the angle of incidence on this mirror is 90∘−30∘=60∘. Hence, the angle of reflection is also 60∘
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