Question

08 m/s) The critical angle in air for a particular type of glass is 39.0°. What is the speed of light in this class glass? (c = 3.00 × 108 m/s) 1.91 × 108 m/s 1.89 × 108 m/s 2.00 × 108 m/s 1.94 × 108 m/s 1.97 × 108 m/s

Answer 1

Answer:

speed of light in glass ≈ 1.89*$10^{8}m/s$

Explanation:

refractive index (n) =$\frac{1}{sinC}$            .......................equation 1

refractive index (n) = velocity of light in air/ velocity of light in medium  ....equ2

equate equation 1 and two;

$\frac{1}{sinC} = \frac{c}{speed of light in glass}$

speed of light in glass = c*sinC

                            =$3*10^{8}*sin39$°

speed of light in glass = 188,796,117.314 m/s

speed of light in glass ≈ 1.89*$10^{8}m/s$