Home
Class 12
PHYSICS
A polaroid is placed at 45^(@) to an inc...

A polaroid is placed at `45^(@)` to an incoming light of intensity `I_(0)` Now, the intensity of light passing through polaroid after polarization would be

A

`I_(0)`

B

`I_(0)//2`

C

`I_(0)//4`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    ALLEN|Exercise Exercise 2 (Brain Teasures)|22 Videos

  • WAVE OPTICS

    ALLEN|Exercise Exercise 3 (Miscellaneous type Questions)|27 Videos

  • WAVE OPTICS

    ALLEN|Exercise Example 15|1 Videos

  • UNIT & DIMENSIONS, BASIC MATHS AND VECTOR

    ALLEN|Exercise Exercise (J-A)|7 Videos

Similar Questions

Explore conceptually related problems

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) What is plane polarised light? Two polaroid sare placed at 90^(@) to each other and the transmitted intensity is zero. What happens when one more polaroid is placed between these two, bisecting the angle between them? How will the intensity of transmitted light vary on further rotating the third polaroid? (b) If a light beam shows no intensity variation when transmitted through a polaroid which is rotated, does it mean that the light is un-polarised? Explain briefly.

A system of three polarizers P_(1),P_(2),P_(3) is set up such that pass axis of P_(3) is crossed with respect to that of P_(1) . The pass axis of P_(2) is inclined at 60^(@) to the pass axis of P_(3) . When a beam of unpolarized light of intensity I_(0) is incident on P_(1) , the intensity of light transmitted by the three polarizes is I . The ratio (I_(o)//I) equals (nearly) : a) 5.33 b) 16.00 c) 10.67 d) 1.80

Unpolarised light of intensity I is passed through a polaroid. What is the intensity of emerging polaroised light ?

Two Polaroids, P_(1)andP_(2) are set-up so that their pass-axis are crossed with respect to each other. A third Polaroids, P_(3) is now introduced between these two so that its pass-axis makes and angle theta with the pass-axis of P_(1) . A beam of unpolarised light, of intensity I, is incident on P_(1) . If the intensity of light, that gets transmitted through this combination of three Polaroids is I' find the ratio ((I')/(I)) when theta equals. (i) 30^(@)" "(ii)45^(@)

Explain with diagram, how plane polarized light can be produced by scattering of sunlight . An incident beam of light of intensity I_(0) is made to fall on a polaroid A. Another polaraid B is so oriented with respect to A that there is no light emerging out of B. A third polaroid C is now introduced mid-way between A and B is so oriented that its axis bisects that angle between the axes of A and B. Calculate the intensity of light transmitted by A,B and C.

if the intensity of light is made 4I_0 , then the saturation current will become

Unpolarized light with intensity I_(0) is incident on combination of two polarizers as shown . The intensity of the light after passage through both the polaroids will be.

Two poalroids are placed at 90^(@) to eachother and the transmitted intensity is zero. What happens when one more polaroid is placed between these two bisecting the angle between them ? What will be the diraction of polarization of outcoming beam ?

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

ALLEN-WAVE OPTICS-Exercise 1 (Check your Grasp)
  1. In single slit fraunhoffer diffraction which type of wavefront is requ...

    Text Solution

    |

  2. In the diffractin pattern of a single slit aperture, the width of the ...

    Text Solution

    |

  3. Central fringe obtained in diffraction pattern due to a single slit-

    Text Solution

    |

  4. In a single slit diffraction pattern, if the light source is used of l...

    Text Solution

    |

  5. In the laboratory, diffraction of light by a single slit is being obse...

    Text Solution

    |

  6. Find the half angular width of the central bright maximum in the fraun...

    Text Solution

    |

  7. In a fraunhofer's diffraction by a slit, if slit width is a, wave leng...

    Text Solution

    |

  8. In a fraunhofer's diffraction obtained by a single slit aperture, the ...

    Text Solution

    |

  9. A polariser is used to

    Text Solution

    |

  10. Light waves can be polarides as they are

    Text Solution

    |

  11. Through which character, we can distinguish the light waves form sound...

    Text Solution

    |

  12. The angle of polarisation for any medium is 60^(@) what will be critic...

    Text Solution

    |

  13. The angle of incidence at which reflected light is totally polarised f...

    Text Solution

    |

  14. A polaroid is placed at 45^(@) to an incoming light of intensity I(0) ...

    Text Solution

    |

  15. Plane polarised light is passed through a Polaroid. On viewing through...

    Text Solution

    |

  16. A ray of light is incident on the surface of a glass plate at an angle...

    Text Solution

    |

  17. A beam of light strickes a piece of glass at an angle of incidence of ...

    Text Solution

    |

  18. Polarized glass is used in sun glasses because:

    Text Solution

    |

  19. When unpolarized light beam of incident from air onto glass (n=1.5) at...

    Text Solution

    |

  20. When the angle of incidence on a material is 60^(@), the reflected lig...

    Text Solution

    |