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A ray of light falls on a denser-rarer b...

A ray of light falls on a denser-rarer boundary from denser side. The critical angle is `45^(@)`. The maximum undergo is

A

20 cm

B

30 cm

C

60 cm

D

80 cm

Text Solution

Verified by Experts

The correct Answer is:
C
(c ) The maximum deviation can be, when it is reflected back at
`i=theta_(c)=45^(@)`
`therefore` Deviation, `delta=180^(@)-2i=90^(@)`
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