Optical Fiber

Q. Question 4
The figure shows a ray of light as it travels from medium A to medium B. Refractive index of the medium B relative to medium A is


(a) $\frac{\sqrt{3}}{\sqrt{2}}$
(b) $\frac{\sqrt{2}}{\sqrt{3}}$
(c) $\frac{1}{\sqrt{2}}$
(d) $\sqrt{2}$

Q.

The wavelength of light in two liquids x and y is 3500 Å and 7000 Å, then

the critical angle of x relative to y will be

1. 

2. 

3. 
4.