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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

0.15

B

0.25

C

0.5

D

0.6

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The correct Answer is:
B
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RESNICK AND HALLIDAY-ELECTROMAGNETIC WAVES -PRACTICE QUESTIONS (Single Correct Choice Type )
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  2. An unpolarized beam of light has intensity I(0) . It is incident on to...

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  3. Three polarizing sheets are placed in a stack with the polarizing dire...

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  5. Two polaroids are kept crossed to each other. Now one of them is rotat...

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  6. A beam of light is linearly polarized . You wish to rotate its directi...

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  7. Electrimagnetic waves are transverse is nature is evident by

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  8. Linear polarized light is incident at Brewster angle on the surface of...

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  9. When light is incident from air to glass at an angle 57^@, the reflect...

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  10. Note the different types of electromagnetic radiation : (1) X-rays ...

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  11. When a radio telescope observes a region of space between two stars it...

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  12. An FM radio station generates radio waves that have a frequency of 95....

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  14. The average distance between the surface of the Earth and the surface ...

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  17. The peak value of the electric field component of an electromagnetic w...

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  18. An electromagnetic wave has an electric field with peak value 250 N/C ...

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  20. Electromagnetic waves are radiated uniformly in all directions from a ...

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