Answer:
V = 2.05× 10⁸ m/s
Explanation:
We are given;
The angle of the incidence; i = 40°
Angle of refraction; (r) = 26°
For us to find the speed of light in the material, we'll use Snell's law
From shell's law, we know that;
n = sin i/sin r = speed of light in air/Speed of light in the medium
Now, speed of light in air = 3 × 10⁸ m/s
Lets speed of light in medium be V
Thus, plugging in the relevant values to obtain;
Sin 40°/sin 26° = 3×10⁸/V
Let's make V the subject;
V = 3 × 10⁸× sin 26°/sin 40°
V = 2.05× 10⁸ m/s
