Advertisements
Advertisements
Question
How does the deviation produced by a prism depend on the refraction index of its material.
Solution
Dependence of prism deviation on material refractive index: At a given incidence angle, a prism with a higher refractive index produces a larger deviation than one with a lower index.
Example: Compared to a crown glass prism with the same refractive angle, a flint glass prism exhibits greater variation.
Since µflint > µcrown
APPEARS IN
RELATED QUESTIONS
Write a short note on dispersion of light.
If the speed of light in vacuum is 3 × 108 ms−1, find the speed of light in a medium of absolute refractive index 1.5.
Name a prism required for obtaining a spectrum of Ultraviolet light.
Complete Fig. 4.32 to show the path of the ray of single colour as it enters the prism and emerges out of it. Mark the angles wherever necessary.
What is meant by the statement the critical angle for diamond is 24°?
A student traces the path of a ray of white light through a rectangular glass slab and marks, the angles of incidence (∠i) , refraction (∠r) and emergence (∠e) as shown. Which angle or angles has he not marked correctly?
(A) ∠i only
(B) ∠i and ∠r
(C) ∠i and ∠e
(D) ∠r and ∠e
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is
The critical angle for glass-air interface is :
What is the refractive index of vacuum
The speed of light in air is 3 × 108 ms-1. Calculate the speed of light in water. The refractive index of water is 4/3.
