0
You visited us 0 times! Enjoying our articles? Unlock Full Access!
Question

The index of refraction for diamond is 2.42. For a diamond in the air (index of refraction = 1.00), what is the smallest angle that a light ray inside the diamond can make with a normal and completely reflect back inside the diamond (the critical angle)?
  1. 68o
  2. 66o
  3. 45o
  4. 90o
  5. 24o

A
68o
B
66o
C
90o
D
45o
E
24o
Solution
Verified by Toppr

The correct option is E 24o
Given : na=1.00 nd=2.42
For total internal reflection to occur, the incidence angle must be greater than the critical angle.
Critical angle of diamond θ=sin1(nand) =sin1(1.002.42)=24o
Thus the smallest angle for total internal reflection to occur in diamond is 24o.

Was this answer helpful?
0
Similar Questions
Q1
The index of refraction for diamond is 2.42. For a diamond in the air (index of refraction = 1.00), what is the smallest angle that a light ray inside the diamond can make with a normal and completely reflect back inside the diamond (the critical angle)?
View Solution
Q2

Refractive index of diamond is 2.42 and that of glass is 1.5. Calculate the critical angle for diamond-glass surface.

View Solution
Q3
Refractive index of diamond is 2.42 and that of glass is 1.5. Calculate the sine of critical angle for the diamond-glass surface.
View Solution
Q4
Calculate the critical angle for diamond having a refractive index of 2.42 and Crown glass having a refractive index of 1.52.
View Solution
Q5
If the refractive index for light going from air to diamond be 2.42, what will be the refractive index for light going from diamond to air?
View Solution