A ray in air is incident on a glass plate whose index of refraction is 1.42. The angle of refraction is one-half the angle of reflection. What is the angle of refraction? [use the identity: sin (2θ) = 2 sin (θ) cos (θ)].
A ray in air is incident on a glass plate whose index of refraction is 1.42. The angle of refraction is one-half the angle of reflection. What is the angle of refraction? [use the identity: sin (2θ) = 2 sin (θ) cos (θ)].
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A ray in air is incident on a glass plate whose index of refraction is 1.42. The angle of refraction is one-half the angle of reflection. What is the angle of refraction? [use the identity: sin (2θ) = 2 sin (θ) cos (θ)].
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