The graph between sine of angle of refraction `(sin r)` in medium 2 and sine of angle of incidence `(sin i)` in medium indicates that `(tan 36^(@)~~(3)/(4))`

Options

A. Total internal reflection can take place
B. Total internal reflection cannot take place
C. Any of `(a)` and `(b)`
D. Data is incomplete

Answer

B

Explanation

From graph,
slop `= tan((2pi)/(10))=(sin r)/(sin i)`
Also, `._(1)mu_(2)=(mu_(2))/(mu_(1))=(sini)/(sinr)=(1)/(tan((2ppi)/(10)))=(4)/(3)impliesmu_(2)gtmu_(1)`