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Question

A monochromatic ray of light is incident on the surface of a glass slab of thickness 8 cm, making and angle 30 with the surface. The lateral displacement of the ray of light will be (μg=3).

A
4.62 cm
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B
5.62 cm
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C
3.62 cm
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D
8 cm
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Solution

The correct option is B 4.62 cm
μ1sini=μ2sinγ (1) sin60=3sinγsinγ=12 so consider OHAγ=30
HA= lateral displacement
tan30=HAOH
13=HA8
HA=83=4.62 cm
so lateral displacement =4.62 cm
Hence option A is correct.

2005711_782237_ans_665eb3b53d124834ab3700999b261c56.PNG

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