For total internal reflection to take place, the angle of incidence `i` and the refractive index `mu` of the medium must satisfy the inequality

Options

A. `(1)/(sin i) lt mu`
B. `(1)/(sin i ) gt mu`
C. `sin i lt mu`
D. `sin i gt mu`

Answer

A

Explanation

For total internal reflection `I lt C`
`rArr sin gt sinC rArr sin i gt (1)/(mu) rArr (1)/(sin i) lt mu`.