The critical angle for glass is 42°. The corresponding angle of refraction is :
A. 0°
B. 90°
C. lesser than 90° but more than 42°
D. no angle of refraction.
Answer:B
The critical angle for glass is 42°. The corresponding angle of refraction is :
A. 0° B. 90° C. lesser than 90° but more than 42° D. no angle of refraction.