The path of a ray of light passing through a rectangular glass slab tested by four students are shown in the figure as A,B,C, and D. Which one of them is correct?
A
A
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B
B
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C
C
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D
D
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Solution
The correct option is BB According to the law of refraction if a ray travels from rarer to denser medium the ray of light bends towards the normal and when a ray travels from denser to rarer medium the ray of light bends away from the normal. Case A, C, and D do not follow the law of refraction but case B does.