Question

Light cannot easily escape a diamond without multiple internal

reflections. This is because:

a) Its critical angle with reference to air is too large

b) Its critical angle with reference to air is too small

c) The diamond is transparent

d) Rays always enter at angle greater than critical angle​

Answer 1

Answer:

option B

because the critical angle of diamond is very less compared to air.

Answer 2

Light cannot easily escape a diamond without multiple internal reflections. This is because its critical angle with reference to air is too small.

• The phenomenon by which light cannot easily escape a diamond without being subjected to multiple internal reflections is known as total internal reflection.
• Due to this phenomenon, a diamond seems to sparkle a lot.
• Total internal reflections happens because its critical angle with reference to air is very small due to which light can exit a diamond in certain ways only.