Advertisements
Advertisements
Question
Express the refractive index μ of a medium in terms of the velocity of light.
Solution
The refractive index ‘μ’ of an optical medium is defined as the ratio between the velocity of light in vacuum divided by the velocity of light in the given optical medium. Thus,
`µ="Velocity of light in vacuum"/"Velocity of light in the given optical medium"`
APPEARS IN
RELATED QUESTIONS
Select from the following the best experimental setup for tracing the path of a ray of light passing through a rectangular glass slab.
(a) P
(b) Q
(c) R
(d) S
A postage stamp kept below a rectangular glass block of refractive index 1.5 when viewed from vertically above it, appears to be raised by 7.0 mm. Calculate the thickness of the glass slab.
A ray of light enters a glass slab ABDC as shown in figure and strikes at the centre O of the circular part AC of the slab. The critical angle of glass is 42°. Complete the path of the ray till it emerges out from the slab. Mark the angles in the diagram wherever necessary.
-
- the angle of refraction and
- the angle of deviation for the ray?
How does the deviation produced by a prism depend on the wavelength of incident light?
What is the refractive index of vacuum
What is the refractive index of water
A ray of light strikes the surface of a rectangular glass slab such that the angle of incidence in air is
- 0°,
- 45°.
In each case, draw a diagram to show the path taken by the ray as it passes through the glass slab and emerges from it.
