As light moves from air into water or glass, it moves the normal.As light moves from water or glass into air, it moves the normal.
Question
As light moves from air into water or glass, it moves the normal.As light moves from water or glass into air, it moves the normal.
Solution
As light moves from air into water or glass, it bends towards the normal. This is due to the change in speed of light as it enters a denser medium from a rarer medium, a phenomenon known as refraction.
As light moves from water or glass into air, it bends away from the normal. This is because light speeds up as it moves from a denser medium (water or glass) to a rarer medium (air), causing it to refract or bend away from the normal.
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