Light bends towards the normal when it travels from optically _____.
A
denser medium to rarer medium.
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B
denser medium to denser medium.
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C
rarer medium to rarer medium.
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D
rarer medium to denser medium.
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Solution
The correct option is D rarer medium to denser medium. Light bends towards the normal when it travels from rarer medium to denser medium. To maintain the same time taken to travel through different media, light ray bends on encountering the boundary between them.