Home
Class 12
PHYSICS
Two polaroids are kept crossed to each o...

Two polaroids are kept crossed to each other. Now one of them is rotated through an angle of `45^(@)` . The percentage of incident light now transmitted through the system is

A

`15%`

B

`25%`

C

`50%`

D

`60%`

Text Solution

Verified by Experts

The correct Answer is:
B
`I = ((I_(0))/(2)) (cos 45^(0))^(2) = (I^(0))/(2) ((I)/(sqrt(2)))^(2) = (I_(0))/(4)`
`rArr I = 25% of I_(0)`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    NARAYNA|Exercise Exercise - 2 (C . W) Interference|13 Videos

  • WAVE OPTICS

    NARAYNA|Exercise Exercise - 2 (C . W) Diffraction|4 Videos

  • WAVE OPTICS

    NARAYNA|Exercise Exercise - 1 (H.W) Resolving power|3 Videos

  • SEMICONDUCTOR ELECTRONICS

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

Similar Questions

Explore conceptually related problems

Two polaroids are kept crossed to each other . If one of them is rotated an angle 60^@ , the percentage of incident light now transmitted through the system is

Two polaroids are crossed to each other. One of them is rotated through 60^(@) , what % age of incident unpolarised light will pass through the system ?

Two polrizers are oriented with transmission planes making an angle of 60^(@) . The percentage of incident unpolarized light that passes through the system is

Two Nicols are oriented with their principal planes making an angle of 60^@ . The percentage of incident unpolarised light which passes through the system is

Two polariods are oriented with their transmision axes making angle of 30^(@) with each other. The fraction of incident un polarised light is transmitted

The angle between pass axis of polarizer and analyser is 45^(@) . The percentage of polarized light passing through analyser is

Two polaroids are crossed. If now one of them is rotated through 30^(@) and unpolarised light of intensity l_(0) is incident on the first polaroid, then the intensity of transmitted light will be

Two polaroids are crossed. If one of them is rotated through 30^(@) and unpolarised light of intensity l_(0) is incident on the first polaroid, then the intensity of transmitted light will be

Two polaroids are kept initially with their axes parallel to each other. One of the palaroid is then rotated through various angles. How would the intensity of light coming from the rotating polaroid be affected, compared to initial intensity if it is ratated through (i) 45^@ (ii) 90^@ (iii) 180^@ .