Optics Question 969

Question: A diver at a depth of 12m in water ( μ=4/3) sees the sky in a cone of semi-vertical angle

[KCET 1999; Pb. PMT 2002; MP PMT 1995, 2003]

Options:

A) sin1(4/3)

B) tan1(4/3)

C) sin1(3/4)

D) 90°

Show Answer

Answer:

Correct Answer: C

Solution:

Semi vertical angle =C=sin1(1μ)=sin1(34)



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