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प्रश्न
Express the refractive index μ of a medium in terms of the angle of incidence i in air and the angle of refraction r in a denser medium.
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उत्तर
If light travels from air into another denser medium, the refractive index ‘μ’ of the medium.
`μ="Sine of the angle of incidence in air"/"Sine of the angle of refraction in the denser medium"`
`μ=sin i/sin r`
संबंधित प्रश्न
A ray of light travels from water to air as shown in the diagram given below :
1) Copy the diagram and complete the path of the way. Given the critical angle for water is 48°.
2) State the condition so that internal reflection occurs in the above diagram.
Which colour of light has a higher critical angle? Red light or green light.
Two isosceles right-angle glass prisms P and Q are placed near each other as shown in Fig. Complete the path of the light ray entering the prism P till it emerges out of the prism Q.
Plot a graph between
Sine of angle of incidence versus sine of angle of refraction,
State two advantages of using a right-angle prism as a reflector, rather than a plane mirror.
A ray of light is incident as a normal ray on the surface of separation of two different mediums. What is the value of the angle of incidence in this case?
Choose the correct option.
Angles of deviation for extreme colours are given for different prisms. Select the one having maximum dispersive power of its material.
Which one of the following is NOT the correct formula for refractive index of glass w.r.t. air (aμg) (i = angle of incidence, r = angle of refraction)
The outer concentric shell in optic fiber is called ______.
- Assertion (A): Propagation of light through an optical fibre is due to total internal reflection taking place at the core-cladding interface.
- Reason (R): Refractive index of the material of the cladding of the optical fibre is greater than that of the core.
