Home
Class 12
PHYSICS
A ray of light travelling in a transpare...

A ray of light travelling in a transparent medium f refractive index `mu`, falls on a surface separating the medium from air at an angle of incidence of `45^(@)`. For which of the following value of `mu` the ray can undergo total internal reflection ?

A

`mu=1.33`

B

`mu=1.40`

C

`mu=1.50`

D

`mu=1.25`

Text Solution

Verified by Experts

The correct Answer is:
C
For total internal reflection, sini `gt` sinC where,
i = angle of incidence
C = critical angle
But, `sin C =(1)/(mu) :. Sinigt(1)/(mu) "or" mu gt (1)/(sini)`
`mugt(1)/(sin45^(@))(i=45^(@) (Given))`
`mugtsqrt(2)`
Hence, option (c ) is correct.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • OPTICS

    MTG GUIDE|Exercise Check your NEET vitals|25 Videos

  • MAGNETIC EFFECTS OF CURRENT AND MAGNETISM

    MTG GUIDE|Exercise AIPMT/NEET (MCQs)|48 Videos

Similar Questions

Explore conceptually related problems

A ray of light travelling in a transparent medium falls on a surface separating the medium from air at an angle of incidence of 45^(@) . The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible value of n from the following.

A ray of light is incident on the surface of water. For what angle, the ray will undergo total internal reflection ?

Knowledge Check

  • A ray of light travelling in transparent medium of refractive index mu falls on a surface separating the medium from air at an angle of incidence of 45^(@) . For which of the following value of mu the ray can undergo total internal reflection ?

    A
    `mu gt 1.33`
    B
    `mu gt 1.4 `
    C
    `mu gt 1.5 `
    D
    `mu gt 1.25`

  • A ray of light travelling in a transparent medium falls on a surface separating the medium from air, at an angle of incidence of 45^@ . The ray undergoes total interal reflection. If mu is the refractive index of the medium with respect to air, select the possible values of mu from the following: (i) 1.3 (ii) 1.4 (iii) 1.5 (iv) 1.6

    A
    (i), (ii)
    B
    (ii), (iii)
    C
    (iii), (iv)
    D
    (i), (iv)

  • A ray of light travelling in a transparant medium falls on a surface separating the medium from air at an angle of incidence of 45degree . The ray undergoes total internal reflection. If n is the refractive in index of the medium with respect to air, select the possible value (s) of n from the following:

    A
    1.3
    B
    1.4
    C
    1.5
    D
    1.6

    • Similar Questions

    Explore conceptually related problems

    A ray of light falls on a transparent slab of mu = 1.732 . If reflected and refracted rays are mutually perpendicular, what is the angle of incidence ?

    A ray of light traveling in a trasparent medium falls on a surface separating the medium from air, at an angle of incidence of 45^(@) . The ray undergoes total internal reflection. If n is the refractive index of the medium with respect to air, select the possible values of n from the following.

    A ray of light traveling in a tranparent medium falls on a surface separating the medidum from air at an angle of incidence of 45^(@) . The ray undergoes total internal refrlection. If n is the refractive index of the medium with respect to air, select the possible value (s) of n from the following:

    A ray of light travelling in air is incident at 45^(@) on a medium of refractive index sqrt(2) . The angle of refractive in the medium is

    A ray of light falls on a transparent slab of mu = 1.0 . If reflected and refracted rays are mutually perpendicular, what is the angle of incidence ?

    Home
    Profile