Ray Optics-Total Internal Reflection (KVPY Stream SB-SX (Class 12 & 1st Year BSC) Physics): Questions 1 - 1 of 1

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Question number: 1

» Ray Optics » Total Internal Reflection

Appeared in Year: 2010

MCQ▾

Question

A point source of light is placed at the bottom of a vessel which is filled with water of refractive index μ to a height h. If a floating opaque disc has to be placed exactly above it so that the source is invisible from above, the radius of the disc should be –

Choices

Choice (4) Response

a.

hμ21

b.

hμ1

c.

hμ21

d.

μhμ21

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