Home
Class 12
PHYSICS
The focal length of convex lens is 30 cm...

The focal length of convex lens is 30 cm and the size of image is quarter of the object, then the object distance is

A

150 cm

B

60 cm

C

30 cm

D

40 cm

Text Solution

Verified by Experts

The correct Answer is:
A
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 a convex lens is 30cm and the size of the real image is (1)/(4)th of the object. Then the object distance is

An object is placed in front of a convex lens of focal length 12 cm. If the size of the real image formed is half the size of the object, calculate the distance of the object from the lens.

The distance between the object and its real image from the convex lens is 60 cm and the height of image is two times the height of object . The focal length of the lens is

A convex lens of focal length f produces a real image 3 times as that of size of the object, the distance between the object and the lens is

The focal length of a convex lens is 20 cm . If an object of height 4 cm is placed at 30 cm from the lens , find the position, nature and size of the image .

The focal length of convex lens is 20 cm. If an object of height 4 cm is placed at a distance of 30 cm from the lens, find: The height of the image

The focal length of convex lens is 20 cm. If an object of height 4 cm is placed at a distance of 30 cm from the lens, find: The position of the image

ERRORLESS -RAY OPTICS-SET
  1. The focal length of convex lens is 30 cm and the size of image is quar...

    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

    |