Question

The velocities of light in air and glass are 3.0 x 10^8ms and 2.0×10^8ms respectively. If the angle of refraction is 30°, the sine of the angle of incidence is?

Pls help​

Answer 1

0.75

Step-by-step explanation:

`refractive \: index \: = \frac{3.0 * {10}^(2) }{2.0 * {10}^(2) }`

= 1.5

`refractive \: index = ( \sin(angle \: of \: incidence) )/( \sin(angle \: of \: refraction) )`

`1.5 = \ ( \sin(i) )/( \sin(30) )`

1.5 × ½ = sin(i)

`\sin(i) = 0.75`