Home
Class 12
PHYSICS
Assertion: By roughening the surface of ...

Assertion: By roughening the surface of a glass sheet its transparency can be reduced.
Reason: Glass sheet with rough surface absorbs more light.

A

If both assertion and reason are true and reason is the correct explanation of assertion

B

If both assertion and reason are true but reason is not the correct explanation of assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
C

When glass surface is made rough then the light falling on it is scattered in different direction due to which its transparency decreases.
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2004

    AIIMS PREVIOUS YEAR PAPERS|Exercise Physics|60 Videos
  • AIIMS 2006

    AIIMS PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

Assertion : A ray of light entering from glass to air suffers change in frequency. Reason : Velocity of light in glass is more than that ni air.

Assertion : The colour of the green flower seen through red glass appears to be dark. Reason : Red glass transmits only red light.

Assertion : If the light from an ordinary source passes through a polaroid sheet, its intensity is reduced by half. Reason : The electric vectors associated with the light wave along the direction of the aligned molecules get absorbed by polaroid.

A match stick can be lighted by rubbing it against a rough surface. Why ?

A ray of light incident on the horizontal surface of a glass slab at an angle of incidence ‘i’just grazes the adjacent vertical surface after reflection. Compute the critical angle and refractive index of glass

Light is incident on a plane glass sheet at an angle of 70^@ . Find the refractive index of glass sheet if the reflected and refracted rays are perpendicular to each other.

When the angle of incidence is 60^(@) on the surface of a glass slab, it is found that the reflected ray is completely polarised. The velocity of light in glass is

Assertion: Surface of asymmetrical conductor can be treated as equipotential surface. Reason: Charges can easily flow in a conductor.

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2005-PHYSICS
  1. Assertion : Specific gravity of a fluid is a dimensionless quantity. ...

    Text Solution

    |

  2. Assertion: Frictional forces are conservative forces. Reason: Potent...

    Text Solution

    |

  3. Assertion: By roughening the surface of a glass sheet its transparency...

    Text Solution

    |

  4. Statement-I : Diode lasers are used as optical sources in optical comm...

    Text Solution

    |

  5. Assertion : Diamond glitters brilliantly. Reason : Diamond does not ...

    Text Solution

    |

  6. Assertion : The energy (E ) and momentum (p) of a photon are related b...

    Text Solution

    |

  7. Assertion : The clouds in the sky generally appear to be whitish. Re...

    Text Solution

    |

  8. Statement-I : Television signals are received through sky-wave propaga...

    Text Solution

    |

  9. Assertion: The logic gate NOT can be built using diode. Reason: The ...

    Text Solution

    |

  10. Assertion : The resolving power of a telescope is more if the diameter...

    Text Solution

    |

  11. Assertion: Reversible systems are difficult to find in real world. R...

    Text Solution

    |

  12. For of particles under central forcer field, the total angular momentu...

    Text Solution

    |

  13. Assertion: Air quickly leaking out of a balloon becomes coolers. Rea...

    Text Solution

    |

  14. It is not possible to use .^35 C 1 as the fuel for fusion energy. Th...

    Text Solution

    |

  15. Assertion: The number of electrons in a p-type silicon semiconductor i...

    Text Solution

    |

  16. Assertion : In a common emitter transistor amplifier, the input curren...

    Text Solution

    |

  17. Assertion : A body that is a good radiator is also a good absorber of ...

    Text Solution

    |

  18. Assertion : In pressure-temperature (P-T) phase diagram of water, the ...

    Text Solution

    |

  19. Assertion : For higher temperature, the peak emission wavelength of a ...

    Text Solution

    |

  20. Statement-1: For reynold number R(e)gt2000 the flow of fluid is turbul...

    Text Solution

    |