Physics for IGCSE & O level - Rays And Waves (Section 10 - No. 40)
If the angle of incidence is 0 degrees, what is the angle of refraction?
0 degrees
90 degrees
45 degrees
It depends on the refractive index
ব্যাখ্যা
When the angle of incidence is 0, the angle of refraction is also 0.