Optics Question 719

Question: Light takes 8 min 20 sec to reach from sun on the earth. If the whole atmosphere is filled with water, the light will take the time ( aμw=4/3 )

Options:

A) 8 min 20 sec

B) 8 min

C) 6 min 11 sec

D) 11 min 6 sec

Show Answer

Answer:

Correct Answer: D

Solution:

μ=cacw=twtatw=253×49=1119=11 min 6 sec



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