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# a ray of light travelling from glass to air. (refractive index of glass is 1.5). what is the angle of deviation if angle of incidence is 50 degree

Vasantha Kumari
7 years ago

Arun Kumar IIT Delhi
7 years ago
Hi
$\\angle of (deviation=incidence-refraction) \\n_1sin(\theta_i)=n_2sin(\theta_r) \\=>1.5sin(50)=sin(\theta_r)$
See if you apply this formulae for travelling from glass to air you won't be getting a accepting value for
$sin(\theta_r)$

So if you could see what wrong in the question statement it would be great.

Thanks & Regards, Arun Kumar, Btech,IIT Delhi, Askiitians Faculty