Question

Which of the following correctly represents graphical relation between sine of angle of incidence (i) and sine of angle of refraction (r)?

• A.

  

• B.

  

• C.

  

• D.

  

Answer 1

The correct option is A

STEP 1: Finding the relation between sin i and sin r

As per Snell's Law,

$\frac{(\sin i)}{(\sin r)}=\mu$

$\sin i=\mu \sin r$

STEP 2: Comparison with the equation of a straight line

The graph of a straight line is given as,

$y=mx$

Comparing Snell's Law equation with the equation of a straight line, we get:

y$=\sin i$

m$=\mu$

x$=\sin r,$

Thus the graph of sin i vs sin r is linear.

Hence, the correct option is (A).