A ray of light is incident on an equilateral triangular glass prism of refractive index 3/2, Calculate the angle through which the ray is minimally deviated in the prism
-
A.
30.0(^{circ} ) -
B.
37.2(^{circ} ) -
C.
42.0(^{circ} ) -
D.
48.6(^{circ} )
Correct Answer: Option B
Explanation
For the equilateral glass prism A = 600
( frac{3}{2} text{Sin} frac{left( frac{Dm + 60}{2}right)}{left(frac{60}{2}right)}= frac{left( text{ Sin }frac{Dm + 60}{2} right)}{0.5} \
implies Dm = 37.2^{circ} )