Home
Class 12
PHYSICS
Unpolarized light of intensity 32Wm^(-2)...

Unpolarized light of intensity `32Wm^(-2)` passes through three polarizers such that transmission axes of the first and second polarizer make an angle `30^@` with each other and the transmission axis of the last polarizer is crossed with that of the first . The intensity of the final emerging light will be

A

32 watt `m^(-2)`

B

3 watt `m^(-2)`

C

8 watt `m^(-2)`

D

4 watt `m^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
`I_(0)` is intensity of unpolarized incident light
`I=(I_(0))/(2)cos^(2)30^(@)" "cos^(2)60^(@)=3` watt `m^(-2)`
Promotional Banner

Similar Questions

Explore conceptually related problems

Unpolarised light of intensity 32 Wm^(-2) passes through three polarisers such that the transmission axis of the last polariser is crossed with first. If the intensity of the emerging light is 3Wm^(-2) , the angle between the axes of the first two polarisers is

Upolarised light of intensity 32 W m^(-2) passes through three polarisers such that transmission axis of first is crossed with third. If intensity of emerging light is 2 W m^(-2) , what is the angle of transmission axis between the first two polarisers?

An unpolarised light of intensity 64 Wm^(-2) passes through three polarisers such that the transmission axis of the last polariser is normal to first. If the intensity of emerging light is 6 Wm(-2),then angle between first two polariser may be

Unpolarized light of intensity 32 Wm^(-3) passes through three polarizers such that the transmission axis of the last polarizer is crossed with the first. If the intensity of the emerging light is 3 Wm^(-2) , what is the angle between the transmission axces of the first two polarizers ? At what angle will the transmitted intensity be maximum ?

Unpolarised ligh of intensity 32 W"/"m^(2) passes through a polariser and analyer which are at ain angle of 30^(@) with respect to each other. The intensity of the light coming from analyser is

An unpolarized light of intensity I_(0) passes through three polarizers, sach that the transmission axis of last polarizer is perpendicular to that of first. If the intensity of emergent light is (3I_(0))/(32) and the angle between the transmission axis of first two polarizers is theta , then

A polarized light of intensity I_(0) is passed through another polarizer whose pass axis makes an angle of 60^(@) with the pass axis of the former, What is the intensity of emergent polarized light from second polarizer?

Unpolarised light of intensity I_0 passes through five successive polaroid sheets,each of whose transmission axes makes an angle 45^@ . With the previous one.The intensity of the finally transmitted light is

Two polaroids are placed in the path of unpolarized beam of intensity I_(0) such that no light is emitted from the second polarid. If a third polaroid whose polarization axis makes an angle theta with the polarization axis of first polaroid, is placed between these two polariods then the intensity of light emerging from the last polaroid will be

A unpolarised light is passed through 3 polarisers. If the second polariser is at an angle 30^(@) with the first and the third polariser is at an angle 60^(@) with the second. Find the final intensity of the light passed through this combination in initial intensity was I.