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