Home
Class 12
PHYSICS
Consider a light beam incident from air ...

Consider a light beam incident from air to a glass slab at Brewster's angle as shown in Figure.

A polaroid is placed in the path of the emergent ray at point P and rotated an axis passing through the centre and perpendicular to the plane of the polaroid.

A

For a particular orientation there shall be darkness as observed through the polaroid.

B

The intensity of light as seen through the polariod shall be independent of the rotation.

C

The intensity of light as seen through the Polaroid shall go through a minimum but not zero for two orientations of the polaroid.

D

The intensity of light as seen through the polaroid shall go through a minimum for four orientations of the polaroid

Text Solution

Verified by Experts

The correct Answer is:
C
emergent ray is partially polarised
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • WAVE OPTICS

    NARAYNA|Exercise LEVEL - V|37 Videos

  • WAVE OPTICS

    NARAYNA|Exercise LEVEL - VI|40 Videos

  • WAVE OPTICS

    NARAYNA|Exercise LEVEL - III|30 Videos

  • SEMICONDUCTOR ELECTRONICS

    NARAYNA|Exercise ADDITIONAL EXERCISE (ASSERTION AND REASON TYPE QUESTIONS :)|19 Videos

Similar Questions

Explore conceptually related problems

A light ray is incident on a plane glass slab of thickness ‘t’ at an angle of incidence ‘i’ as shown in the figure. If mu is the refractive index of glass. Then find time taken by the light ray to travel through the slab.

Light incidence on a sphere of refractive index sqrt3 placed in a air as shown in Figure. Find the angle (theta) in degree between emergent ray and reflected ray.

Knowledge Check

  • Consider a light beam incident from air to a glass slab at Brewster's angle as shown in figure. A polaroid is placed in the path of the emergent ray at point P and rotated about an axis passing through the centre and pependicular to the plane of the plaroid.

    A
    for a particular orientation, there shall be darkness as observed through the polaroid
    B
    The intensity of light as seen through the polaroid shall be independent of the rotation
    C
    The intensity of light as seen through the polaroid shall go through a minimum but not zero for two orientations of the polaroid
    D
    The intensity of light as seen through the polaroid shall go through a minimum for four orientations of the polaroid

  • A short pulse of white light is incident from air to a glass slab at normal incidence. After travelling through the slab, the first colour to emerge is.

    A
    blue
    B
    green
    C
    violet
    D
    red

  • A rays of light is incident on a thick slab of glass of thickness t as shown in figure. The emergent ray is parallel to the incident ray but displaced sideways by a distance d. If the angles are small then d is

    A
    `t(1+(i)/(r))`
    B
    `rt(1-(i)/(r))`
    C
    `it(1-(r)/(i))`
    D
    `t(1+(r)/(i))`

    • Similar Questions

    Explore conceptually related problems

    A ray of light AO in vacuum is incident on a glass slab at angle 60^(@) and refracted at angle 30^(@) along OB as shown in the figure.The optical path length of light ray from A to B is

    A plane mirror reflecting a ray of incident light is rotated through an angle of 30^@ about an axis through the point of incidence in the plane of the mirror and perpendicular to the plane of incidence then

    A plane mirror reflecting a ray of incident light is rotated through an angle theta about an axis through the point of incidence in the plane of the mirror perpendicular to the plane of incidence, then:-

    A plane mirror, reflecting a ray of incident light, is rotated through an angle theta about an axis through the point of incidence in the plane of the mirror perpendicular to the plane of incidence, then

    A ray of light is incident on a parallel-sided glass slab as shown in the figure. The angle of refraction for this ray of light is likely to be :

    Home
    Profile