define rarer and denser medium
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Due to this change in speed light bends and travels when passing from one medium to other medium. When the light ray passes from rarer mediumto denser medium it bends towards the normal. Example: Light ray passing from air to glass (Air � rarer medium, Glass - denser medium.
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the medium having higher speed of light in it,is referred to as the optical rarer medium.
the medium having lower speed of light in it, is referred to as the optical denser medium.
the medium having lower speed of light in it, is referred to as the optical denser medium.
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