Home
Class 12
PHYSICS
A ray of monochromatic light is incident...

A ray of monochromatic light is incident on the plane surface of separation between two media x and y with angle of incidence `i` in the medium x and angle of refraction r in the medium y. The graph shows the relation between sin `i` and sin `r`.

A

The speed of light in the medium y is `sqrt3` times than in mediun x

B

The speed of light in the medium y is `1/sqrt3` times than in medium x

C

The total internal reflection can take place when the incidence is in x

D

The total internal reflection can take place when the incidence is in y

Text Solution

Verified by Experts

The correct Answer is:
B, D
`(sini_1)/(sini_2)=v_1/v_2`
`:. Sinr/sini=slope=1/sqrt3=(v_y)/(v_x)`
`:. v_y=v_x/sqrt3`
Speed of light in medium-y is less. So, it is denser.
TIR takes place when ray of travels from denser to
rarer medium.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    DC PANDEY ENGLISH|Exercise Level 2 Comprehension Based|3 Videos

  • REFRACTION OF LIGHT

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|21 Videos

  • REFRACTION OF LIGHT

    DC PANDEY ENGLISH|Exercise more than one correct option|1 Videos

  • REFLECTION OF LIGHT

    DC PANDEY ENGLISH|Exercise Subjective|9 Videos

  • SEMICONDUCTORS

    DC PANDEY ENGLISH|Exercise Subjective|12 Videos

Similar Questions

Explore conceptually related problems

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 ?

A ray of light is incident on the surface of seperation of a medium at an angle 45^(@) and is refracted in the medium at an angle 30^(@) . What will be the velocity of light in the medium?

Knowledge Check

  • Light is incident on a glass surface at polarising angle of 57.5^(@) Then the angle between the incident ray and the refracted ray is

    A
    `57.5^(@)`
    B
    `115^(@)`
    C
    `205^(@)`
    D
    `145^(@)`

    • Similar Questions

    Explore conceptually related problems

    A ray of light travelling in medium. A is incident on the plane interface of two medium W and B and gets refracted into the medium B. The angle of incidence is I and that of refraction is r. The graph between sin(i) and sin(r) is a shown in the diagram . The correct Statement among the following is

    When a monochromatic light ray is incident on a medium of refracive index mu with angle of incidence theta_(1) ,the angle of refraction is theta_(r). if theta_(i) is changed slightly by Deltatheta_(i) ,then the corresponding change in theta_(r) will be-

    Unpolarized light is incident on a plane glass surface. What should be the angle of incidence so that the reflected and refracted rays are perpendicular to eachother ?

    Unpolarized light is incident on a plane glass surface having refractive index . The angle of incidence at which reflected and refracted rays would become perpendicular to each other is :

    A light ray is incident fromt a denser medium on the boundary separating it from a rarer medium at an angle of incidence equal to the critical angle. What is the angle of refraction for the ray ?

    A ray of light is incident normally on a plane glass slab. What will be (i) the angle of refraction, and (ii) the angle of deviation for the ray ?

    When a ray of ordinary light is incident on the surface of separation of two media at polarizing angle, show with the help of a labelled diagram that reflected ray and the refracted ray are mutually perpendicular to each other.

    Home
    Profile