Home
Class 12
PHYSICS
The focal lengths of the objective and e...

The focal lengths of the objective and eye`-` lens of a microscope are `1cm` and `5 cm` respectively. If the magnifying power for the relaxed eye is `45`, then the length of the tube is

A

`30 cm`

B

`25 cm`

C

`15 cm`

D

`12 cm`

Text Solution

Verified by Experts

The correct Answer is:
c
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    ERRORLESS |Exercise Refraction of Light at Plane Surfaces|9 Videos

  • RAY OPTICS

    ERRORLESS |Exercise Refraction at Curved Surface|8 Videos

  • MAGNETISM

    ERRORLESS |Exercise Assertion & Reason|1 Videos

  • WAVE OPTICS

    ERRORLESS |Exercise SET|23 Videos

Similar Questions

Explore conceptually related problems

The focal length of the objective and the eyepiece of a microscope are 4mm and 25mm respectively.If the final image is formed at infinity and the length of the tube is 16cm the magnifying power of the microscope will be

The focal lengths of the objective and eye lenses of a telescope are respectively 200 cm and 5 cm . The maximum magnifying power of the telescope will be

The focal lengths of the objective and eye piece of a microscope are 2 cm and 5 cm respectively, and the distance between them is 20 cm . Find the distance of the object from the objective when the final image seen by the eye is 25 cm from the eye piece. What is the magnifying power ?

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

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 focal lengths of the objective and eyepiece of a microscope are 4mm and 25 mm respectively, and the length of the tube is 16cm. If the final image is formed at infinity and the least distance of distinct vision is 25 cm, then calculate the magnifying power of the microscope.

The focal length of objective and eye-piece of a compound microscope are 1 cm and 5 cm respectively. The microscope magnification is equal to 50. If the distance between two lenses is increased by 2 cm then the magnification is

ERRORLESS -RAY OPTICS-SET
  1. The focal lengths of the objective and eye- lens of a microscope are 1...

    Text Solution

    |

  2. In an astronomical telescope in normal adjustment a straight black lin...

    Text Solution

    |

  3. Three lenses L(1) , L(2) , L(3) are placed co-axially as shown in figu...

    Text Solution

    |

  4. An object is placed at a point distant x from the focus of a convex le...

    Text Solution

    |

  5. The diameter of the eye-ball of a normal eye is about 2.5 cm . The pow...

    Text Solution

    |

  6. In a thin spherical fish bowl of radius 10 cm filled with water of ref...

    Text Solution

    |

  7. A small fish 0.4 m below the surface of a lake is viewed through a sim...

    Text Solution

    |

  8. A water drop in air refractes the light ray as

    Text Solution

    |

  9. Which of the following ray diagram show physically possible refraction...

    Text Solution

    |

  10. Following figure shows the multiple reflections of a light ray along a...

    Text Solution

    |

  11. When the rectangular metal tank is filled to the top with an unknown l...

    Text Solution

    |

  12. A concave mirror and a converging lens (glass with mu = 1.5) both have...

    Text Solution

    |

  13. A ray of light strikes a plane mirror M at an angle of 45^(@) as shown...

    Text Solution

    |

  14. A slab of glass, of thickness 6 cm and refractive index 1.5, is placed...

    Text Solution

    |

  15. A point source of light S is placed at the bottom of a vessel containi...

    Text Solution

    |

  16. A point object is placed midway between two plane mirrors a distance a...

    Text Solution

    |

  17. A convergent beam of light is incident on a convex mirror so as to con...

    Text Solution

    |

  18. PQR is a right angled prism with other angles as 60^(@) and 30^(@). Re...

    Text Solution

    |

  19. When a ray is refracted from one medium to another, the wavelength cha...

    Text Solution

    |

  20. Two this lenses, when in contact, produce a combination of power +10 d...

    Text Solution

    |

  21. The plane faces of two identical plano convex lenses, each with focal ...

    Text Solution

    |