Home
Class 10
PHYSICS
Where should an object be placed on the ...

Where should an object be placed on the axis of a convex lens of focal length 8 cm, so as to achieve magnification of -4? (Distances are measured from optic centre of the lens)

A

focus

B

curvature

C

beyond curvature

D

optical centre

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • OPTICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER (Fill in the blanks (Covers whole unit))|143 Videos

  • OPTICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER (State whether the following statements are true or false. Correct the statement if it is false.)|21 Videos

  • OPTICS

    SURA PUBLICATION|Exercise GOVERNMENT EXAM QUESTIONS & ANSWERS|1 Videos

  • NUCLEAR PHYSICS

    SURA PUBLICATION|Exercise ADDITIONAL QUESTIONS & ANSWER (HIGHER ORDER THINKING SKILLS (HOTS))|5 Videos

  • PROBLEMS-2 MARKS

    SURA PUBLICATION|Exercise Subjective Type Question|24 Videos

Similar Questions

Explore conceptually related problems

The power of a convex lens of focal length 50 cm is …………….

The power of convex lens with focal length 40 cm is …………

An object is placed at a distance 20 cm from a convex lens of focal length 10 cm . Find the image distance and nature of the image .

An object is placed at a distance of 10 cm from a convex lens of focal length 12 cm. Find the position and nature of the image.

An object is placed at 12 cm from a convex lens whose focal length is 10 cm . The image must __________ .

Where should an object be placed so that a real and inverted image of same size is obtained by a convex lens.

SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Choose the Correct Answer)
  1. Image formed in simple microscope is .

    Text Solution

    |

  2. Objective lens of telescope is of .

    Text Solution

    |

  3. Presbyobia is corrected by .

    Text Solution

    |

  4. To increase the magnification of the telescope, the focal length of th...

    Text Solution

    |

  5. Among visible light, has the lowest wavelength.

    Text Solution

    |

  6. The second law of refraction is also known as .

    Text Solution

    |

  7. is an optical instrument used to see distant objects.

    Text Solution

    |

  8. The speed of light in vaccum is ms^(-1).

    Text Solution

    |

  9. Light is characterized by and frequency.

    Text Solution

    |

  10. The ratio of speed of light in vaccum to the speed of light medium is ...

    Text Solution

    |

  11. lenses are used as eye lens of 'Galilean Telescope'

    Text Solution

    |

  12. Power of accommodation is achieved by changing the of the eye lens.

    Text Solution

    |

  13. The refractive index of a medium is dependent on the .

    Text Solution

    |

  14. scattering is responsible for the white appearance of the clouds.

    Text Solution

    |

  15. The spectral lines having frequency equal to the incident ray frequenc...

    Text Solution

    |

  16. If one of the focus of a bi-covnex lens is plane, it is known as a .

    Text Solution

    |

  17. lenses are used in camera lenses.

    Text Solution

    |

  18. The defect of myopia can be corrected by using .

    Text Solution

    |

  19. When an object is placed at infinity a is formed at the focus in conc...

    Text Solution

    |

  20. Where should an object be placed on the axis of a convex lens of focal...

    Text Solution

    |