Home
Class 11
PHYSICS
Assertion : If objective and eye lens of...

Assertion : If objective and eye lens of a mcroscope are interchanged then it can work as telsecope.
Reason : The object of telescope has large focal lengths.

A

Assertion is True, Reason is True, Reason is a correct explanation for Assertion.

B

Assertion is True, Reason is True, Reason is not a correct explanation for Assertion.

C

Assertion is True, Reason is False.

D

Assertion is False, Reason is True.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Motion in a plane

    TARGET PUBLICATION|Exercise Exercise|340 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos

Similar Questions

Explore conceptually related problems

The objective of astronomical telescope has

Relative difference of focal lengths of objective and eye lens in the microscope and telescope is given as

The focal length of objective and eye-piece of astronomical telescope are 2 m and 5 cm respectively. The magnifying power of telescope when final image is formed at infinity is

An astronomical telescope has an angular magnification of magnitude 5 for distant object. The separation between the objective and the eyepiece is 36 cm and the final image is formed at infinity. The focal length f_(0) of the objective and the focal length f_(0) of the eyepiece are

Assertion : A concave mirror and convex lens both have the same focal length in air. When they are submerged in water, they will have same focal length. Reason refractive index of water is smaller than be refractive index of air.

Assertion : A single lens produces a coloured image of an object illuminated by white light. Reason : The refractive index of material of lens is different for different wavelengths of light.

If the focal length of the objective lens is increased then

Whan a _____ is introduced between objective and eye piece of telescope then it can be used as a terrestrial telescope.

TARGET PUBLICATION-OPTICS-EXERCISE
  1. An infinitely long bar lies alont the adis of cancave mirror of focal...

    Text Solution

    |

  2. Radius of the circle of least confusion is called as .

    Text Solution

    |

  3. Assertion : If objective and eye lens of a mcroscope are interchanged ...

    Text Solution

    |

  4. A convex lens focal lenghts 30 cm made of glass of refractive index 1....

    Text Solution

    |

  5. Magnifying power of a telescope in normal adjustment when final images...

    Text Solution

    |

  6. Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...

    Text Solution

    |

  7. Assertion : If radius of curvature of mirror is doubled, focal length ...

    Text Solution

    |

  8. Assertion : A dentist uses a convex mirror to examine a small cavity i...

    Text Solution

    |

  9. For a given compound microscope, increase in length of tube

    Text Solution

    |

  10. A light ray enters a solid glass sphere of refractive index sqrt3 at a...

    Text Solution

    |

  11. A telescope using an eye piece of focal length 2 cm has a magnificatio...

    Text Solution

    |

  12. Which of the following (referred to a spherical mirror) do (does) not ...

    Text Solution

    |

  13. In optical fibre, assuming, the cladding is uniform, light is transmi...

    Text Solution

    |

  14. Light propagates 4 cm distance in glass of refractive index 1.5 in tim...

    Text Solution

    |

  15. A transparent solid cylindrical rod has a refractive index of (frac(2)...

    Text Solution

    |

  16. A beam of light consisting of red, and blue colours is incident on a r...

    Text Solution

    |

  17. A light ray is incident normally on the face AB of a right-angled pris...

    Text Solution

    |

  18. Diamond is optically more dense than water because

    Text Solution

    |

  19. Critical angle of glass is theta(1) and that of water is theta(2). The...

    Text Solution

    |

  20. The value of critical angle is least for which of the following colour...

    Text Solution

    |