Three nicols prisms are placed such that, first and third are mutually perpendicular. Unpolarised light is incident on first nicol's prism, the intensity of light emerges from third nicol's prism is `1//16` the intensity of incident light. Find the angle between first and second nicol's prisms.
`[22.5^(@)]`

Assertion: Nicol prism is used to produce and analyse plane polarised light. Reason: Nicol prism reduces the intensity of light to zero.

An unpolarised beam of intensity I_(0) is incident on a pair of nicols making an angle of 60^(@) with each other. The intensity of light emerging from the pair is

A ray of light is incident on the glass prism at an angle of 40^(@) . Find the angle of emergence, if the angle of prism is 60^(@) and refractive index is 1.5.

A student is performing an experiment with two triangular glass prisms. He places the first glass prism on its base. The second glass prism is placed upside down behind the first glass prism. When a beam of white light is allowed to fall on the first glass prism, then a patch of ordinary white light is obtained on a screen placed behind the second glass prism. (a) Draw a ray diagram to show the above· arrangement of two glass prisms and the light passing through them. (b) What is the function-of (i) first prism, and (ii) second prism, in this arrangement?

Light is incident on a polarizer with intensity I_0 . A second prism called analyzer is kept at a angle of 15^@ , from the first polarizer then the intensity of final emergent light will be

A light beam is incident on a rectangular glass plate (mu= 1.54) The reflected light OB passes through a nicol prism. On observing the transmitted light while rotating the prism, it is seen that

A ray of light is incident on one face of a prism ( m= sqrt(3) ) at an angle of 60^@ . The refracting angle of the prism is also 60^@ . Find the angle of emergence .

The angle of prism is 60^(@) and its refractive index is 1.5. There will be no emergent light if the angle of incidence on the first face is