Home
Class 12
PHYSICS
A : The objective and the eye-piece of a...

A : The objective and the eye-piece of a compound microscope should have short focal lengths.
R : Magnifying power of a compound microscope is inversely proportional to the focal lengths of both the lenses.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).

C

If Assertion is true statement but Reason is false, then mark (3).

D

If both Assertion and Reason are false statements, then mark (4).

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION - C)|80 Videos

  • PHYSICAL WORLD

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section-B)|4 Videos

  • SEMICONDUCTOR ELECTRONICS (MATERIAL, DEVICES AND SIMPLE CIRUITS )

    AAKASH INSTITUTE ENGLISH|Exercise Assignment SECTION - D (Assertion & reason type Question)|10 Videos

Similar Questions

Explore conceptually related problems

The focal length of the objective lens of a compound microscope is

A compound microscope has tube length 300 mm and an objective of focal length 7.5 mm and an eyepiece of certain focal length. When eyepiece is replaced by another lens of focal length 20 mm, the magnifying power of compound microscope is increased by 100. The focal length of previous eyepiece is

A compound microscope has tube length 300 mm and an objective of focal length 7.5 mm and an eyepiece of certain focal length. When eyepiece is replaced by another lens of focal length 20 mm, the magnifying power of compound microscope is increased by 100. The focal length of previous eyepiece is

The magnification produced by the objective lens and the eye lens of a compound microscope are 25 and 6 respectively. The magnifying power of this microscope is

The magnifying power of a simple microscope can be increased, if we use eye-piece of

Lateral magnification of objective of compound microscope is 100 and angular magnification of its eyepiece is 20. The magnifying power of compound microscope is

Explain giving reason, how the resolving power of a compound microscope depends on the (a) frequency of the incident light, (b) focal length of the objectives lens.

A compound microscope has two lenses. The magnifying power of one is 5 and the combined magnifying power is 100. The magnifying power of the other lens is

A compound microscope has two lenses. The magnifying power of one is 5 and the combined magnifying power is 100. The magnifying power of the other lens is

The separation between the objective and the eyepiece of a compound microscope can be adjusted between 9.8 cm to 11.8 cm. If the focal lengths of the objective and the eyepiece are 1.0 cm and 6 cm respectively, find the range of the magnifying power if the image is always needed at 24 cm from the eye.

AAKASH INSTITUTE ENGLISH-RAY OPTICS AND OPTICAL INSTRUMENTS-ASSIGNMENT (SECTION - D)
  1. A : Plane and convex mirrors can produce real images of objects. R :...

    Text Solution

    |

  2. A : A virtual image cannot be caught on a screen but it can be photogr...

    Text Solution

    |

  3. A : When a diver under water looks obliquely at a fisherman standing o...

    Text Solution

    |

  4. A : The apparent depth of a tank of water decreases if viewed obliquel...

    Text Solution

    |

  5. A : Proper cutting of diamond makes it sparkle. R : Diamond has very...

    Text Solution

    |

  6. A : The angle subtended at the eye by an object is equal to the angle ...

    Text Solution

    |

  7. The total plane angle subtended by a circle at its centre is

    Text Solution

    |

  8. A : Magnifying power of a simple microscope cannot be increased beyond...

    Text Solution

    |

  9. A : The objective and the eye-piece of a compound microscope should ha...

    Text Solution

    |

  10. A : When viewing through a compound microscope, our eyes should be pos...

    Text Solution

    |

  11. A uniform capillary tube of inner radius r is dipped vertically into a...

    Text Solution

    |

  12. A : A virtual image cannot be produced on screen. R : The light ener...

    Text Solution

    |

  13. A : Lenses of large aperture suffer from spherical aberration. R : T...

    Text Solution

    |

  14. A : The image formed by a concave lens is always virtual. R : The ra...

    Text Solution

    |

  15. A : When two lenses in contact form an achromatic doublet, then the ma...

    Text Solution

    |

  16. A : A reflecting type of telescope is preferred over refracting type i...

    Text Solution

    |