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小 發表於 2015-6-5 03:44 PM (第 3219 天)
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F.3 Physics Uniform Quiz Questions
(How to calculate?)
A diver is directly under a large patch of dirty oil floating on the water surface. The oil blocks all the light falling on it. Assume the oil patch is circular in shape and has a radius of 0.8 m. Find the minimum depth of the diver so that he can see objects above the water surface.
(Given: the refractive index of water = 1.33)
A. 0.7 m
B. 0.9 m
C. 1.1 m
D. 1.4 m