Home
Class 12
PHYSICS
A thin converging lens of focal length f...

A thin converging lens of focal length f = 25 cm forms the image of an object on a screen placed at a distance of 75 cm from the lens. Now the screen in moved closer to the lens by a distance of 25 cm. The distance through which the object has to be shifted so that its image on the screen is sharp again is

A

37.5 cm

B

16.25 cm

C

12.5 cm

D

13.5 cm

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • NTA JEE MOCK TEST 19

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos
  • NTA JEE MOCK TEST 25

    NTA MOCK TESTS|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

A thin converging lens of focal length f=25.0 cm forms the image of an object,on the screen,at a distance 5m from the lens. The screen is then drawn closer by a distance of 18cm. By what distance should the object be shifted so that its image on the screen is sharp again?

A thin converging lens of focal length 25.0cmforms the image of an object, on the screen, at a distance 5m from the lens. The screen is then drawn closer by a distance of 18cm. By what distance should the object be shifted so that its image on the screen is sharp again?

A thin converging lens with focal length f = 25 cm projects the image of an object on a screen removed from the lens by a distance l == 5.0 m . Then the screen was draws closer to the lens by a distance Delta l = 18 cm . By what distance should the object be shifted for its image to become sharp again ?

A convex lens is used to obtain a magnified image of an object on a screen . The object is at a distance 10 m from the lens . If the magnification is 19. the focal length of the lens is

An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm . The image is formed on the other side of the lens at a distance

A converging lens of focal length 5 cm is placed at a distance of 20 cm from a screen. How far from the lens should an object be placed so as to form its real image on the screen?

At what distance should an object be placed from a lens of focal length 25 cm to obtain an image on a screen placed at a distance of 50 cm from the lens ? What will be the magnification produced in this case?

An object of height 1.5 cm is placed on the axis of a convex lens of focal length 25 cm . A real image is formed at a distance of 75 cm from the lens. The size of the image will be

NTA MOCK TESTS-NTA JEE MOCK TEST 22-PHYSICS
  1. Two cells of E.M.F. E(1) and E(2)(E(2)gtE(1)) are connected in series ...

    Text Solution

    |

  2. A current carrying wire is placed in the grooves of an insulating semi...

    Text Solution

    |

  3. The minimum force required to move a body up an inclined plane is thre...

    Text Solution

    |

  4. Consider the figure here. A particle of mass m is constrain to move in...

    Text Solution

    |

  5. If the electron in hydrogen atom jumps from second Bohr orbit to g...

    Text Solution

    |

  6. The work done in blowing a soap bubble of volume V is W. The work done...

    Text Solution

    |

  7. A sphere of radius R is gently dropped into liquid of viscosity eta in...

    Text Solution

    |

  8. A thin converging lens of focal length f = 25 cm forms the image of an...

    Text Solution

    |

  9. In a diagram shown, a rod of mass M has been fixed on a ring of the sa...

    Text Solution

    |

  10. The current gain for a common emitter amplifier is 69. If the emitter ...

    Text Solution

    |

  11. Two vessel separately contains two ideal gases A and B at the same tem...

    Text Solution

    |

  12. The length of an object is measured using a vernier system whose main ...

    Text Solution

    |

  13. Two polaroids are crossed. If now one of them is rotated through 30^(@...

    Text Solution

    |

  14. A closed and an open organ pipe have the same length. When they are vi...

    Text Solution

    |

  15. Power of the only force acting on a particle of mass m=1 kg moving in ...

    Text Solution

    |

  16. The power dissipated (in watt) in 3Omega resistance in the following c...

    Text Solution

    |

  17. In LCR circuit current resonant frequency is 600Hz and half power poin...

    Text Solution

    |

  18. The plates of a parallel plate capacitor are charged to a potential di...

    Text Solution

    |

  19. A carnot engine has efficiency 1//5 . Efficiency becomes 1//3 when tem...

    Text Solution

    |

  20. In optical communication system operating at 1200nm, only 2% of the so...

    Text Solution

    |