A ray of light travelling from air to glass is deviated by an angle of ` 24^(@)`. If the reflected and refracted rays are at right angles then the ang

Question

A ray of light travelling from air to glass is deviated by an angle of ` 24^(@)`. If the reflected and refracted rays are at right angles then the ang

A ray of light travelling from air to glass is deviated by an angle of ` 24^(@)`. If the reflected and refracted rays are at right angles then the angles of incidence is
A. `48^(@)`
B. `57^(@)`
C. `28^(@)`
D. `24^(@)`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
`i+r=90^(@) and i-r=24^(@)`
`:. 2i=90^(@)+24^(@)=114^(@) " " :. i=57^(@)`

5 views Answered 2023-02-05 15:29