alleryAir view near normal: v=2×10^8, c=3×10^8 m/s; real depth 30 cm. Apparent depth?
A10 cm
B45 cm
C20 cm
D15 cm
Answer & Solution
Correct answer: C. 20 cm
The speed ratio gives n=1.5, so the near-normal apparent depth from air is 30/1.5 = 20 cm.
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