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 the reason is the correct explanation of the assertion.

B

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

C

If assertion is true but reason is false.

D

If the assertion and reason both 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

  • RAY OPTICS

    ERRORLESS|Exercise PAST YEARS QUESTIONS|61 Videos
  • MAGNETISM

    ERRORLESS|Exercise Assertion and Reason|22 Videos
  • WAVE OPTICS AND ELECTROMAGNETIC THEORY

    ERRORLESS|Exercise ASSERTION & REASON |27 Videos

Similar Questions

Explore conceptually related problems

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.

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.

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

Assertion : Water drop stick to glass surface. Reason : Water have properties of surface tension.

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

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

ERRORLESS-RAY OPTICS-Assertion & Reason
  1. Assertion : The colour of the green flower seen through red glass appe...

    Text Solution

    |

  2. Assertion: The frequencies of incident, reflected and refracted beam o...

    Text Solution

    |

  3. Assertion : The polar caps of earth are cold in comparison to equato...

    Text Solution

    |

  4. Assertion : A concave mirror and convex lens both have the same focal ...

    Text Solution

    |

  5. Assertion : In optical fiber, the diameter of the core is kept small. ...

    Text Solution

    |

  6. Assertion : The mirrors used in search lights are parabolic and not co...

    Text Solution

    |

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

    Text Solution

    |

  8. STATEMENT-1 We cannot produce a real image by plane of convex mirror u...

    Text Solution

    |

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

    Text Solution

    |

  10. Assertion : Within a glass slab, a double convex air bubble is formed....

    Text Solution

    |

  11. Assertion : There is no dispersion of light refracted through a rectan...

    Text Solution

    |

  12. Assertion : All the materials always have the same colour, whether vie...

    Text Solution

    |

  13. Assertion : By roughening the surface of a glass sheet its transparenc...

    Text Solution

    |

  14. Assertion : By increasing the diameter of the objective of telescope,...

    Text Solution

    |

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

    Text Solution

    |

  16. The resolving power of electron microscope is higher that that of an o...

    Text Solution

    |

  17. Assertion : Dispersion of light occurs because velocity of light in a ...

    Text Solution

    |

  18. Statement-1 : The refractive index of a prism depends only on the kind...

    Text Solution

    |

  19. Statement-1 : it is impossible to photograph a virtual image. Statem...

    Text Solution

    |

  20. Read the assertion and reason carefully to mark the correct option out...

    Text Solution

    |