Choose the one alternative that best completes the statement or answers the question. -A flashlight beam makes an angle of 60° with the plane of the surface of a calm lake

Choose the one alternative that best completes the statement or answers the question.
-A flashlight beam makes an angle of 60° with the plane of the surface of a calm lake before it enters the water. In the water what angle does the beam make with the plane of the surface? The
Index of refraction of water is 1.33.

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