Question

If the angle of a Prism is 60 degree and the angle of minimum deviation is 37.2 degree the refractive index of prism will be?

Answer 1

therefore , ri of prism = root 2

Answer 2

$a = 60$

$d = 37.2$

$\frac{a + d}{2} = \frac{60 + 37.2}{2} = \frac{97.2}{2} = 48.6$

$\frac{a}{2} = \frac{60}{2} = 30$

$n \: = \: \frac{sin( \frac{a + d}{2}) }{sin( \frac{a}{2}) } = \frac{sin(48.6)}{sin(30)} = 1.5$