Home
Class 12
PHYSICS
Figure, shown two converging lenses. Inc...

Figure, shown two converging lenses. Incident rays are parallel to the principal axis. What should be the value of d so that final rays are also parallel?
Here, the diameter of ray beam become wider.

Text Solution

Verified by Experts

`d=10+20=30cm`
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Subjective|26 Videos

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Single Correct|221 Videos

  • GEOMETRICAL OPTICS

    CENGAGE PHYSICS ENGLISH|Exercise Exercise1.6|15 Videos

  • ELECTRON,PHONTS,PHOTOELECTRIC EFFECT & X-RAYS

    CENGAGE PHYSICS ENGLISH|Exercise dpp 3.3|15 Videos

  • HEATING EFFECT OF CURRENT

    CENGAGE PHYSICS ENGLISH|Exercise Thermal Power in Resistance Connected in Circuit|27 Videos

Similar Questions

Explore conceptually related problems

The angle of incidance for an equilateral prism is 60^(@) . What should be the refractive index of prism so that the ray is parallel to the base inside the prism ?

Assertion:- Paraxial rays are always parallel to the principal axis. Reason:- A parallel beam parallel to principal axis converges at the focal point.

A ray of light is incident on a glass sphere of refractive index 3/2. What should be the angle of incidence so that the ray which enters the sphere does not come out of the sphere ?

Unpolarized light is incident on a plane glass surface. What should be the angle of incidence so that the reflected and refracted rays are perpendicular to eachother ?

Find the distance CQ if incident light ray parallel to principal axis is incident at an angle i. Also, find the distance CQ if irarr0 .

What should be the value of distance d so that final image is formed on the object itself. (Focal length of the lenses are written on the lenses.)

A ray of light, after refracting through a concave lens, emerges parallel to the principal axis. Draw a ray diagram to show the incident ray and its corresponding emergent ray.

A parallel beam of light is incident on a converging lens parallel to its principal axis. As one moves away from the les on the other side on its principal axis, the intensity of light

A ray of light is incident on a concave mirror . It is parallel to the principal axis and its height from principal axis is equal to the focal length of the mirror. The ratio of the distance of point B to the distance of the focus from the centre of curvature is (AB is the reflected ray)

The values of d_(1) & d_(2) for final rays to be parallel to the principal axis are: (focal lengths of the lenses are written above the respective lenses in the given figure)

CENGAGE PHYSICS ENGLISH-GEOMETRICAL OPTICS-Exercise1.7
  1. In Figure. , find the position of final image formed.

    Text Solution

    |

  2. Figure, shown two converging lenses. Incident rays are parallel to the...

    Text Solution

    |

  3. In Figure., find the position of final image formed.

    Text Solution

    |

  4. In Fig. what should be the value of d so that image is formed on the ...

    Text Solution

    |

  5. In Fig,, if the image of object O has to coincide with itself, then w...

    Text Solution

    |

  6. A convex lens of focal length 20cm is placed 10cm away from a second ...

    Text Solution

    |

  7. When an object is placed at the proper distance ot the left of a conve...

    Text Solution

    |

  8. A telephoto combination consists of convex lens of focal length 30cm a...

    Text Solution

    |

  9. A convex lens is cut in half along its principal axis and the two halv...

    Text Solution

    |

  10. A plano-convex lens is silvered on its plane side. The radius of curva...

    Text Solution

    |

  11. A convex lens of focal length 10cm is placed 30 cm in front of a secon...

    Text Solution

    |

  12. A concave mirror of focal length 30 cm is placed on the flat horizont...

    Text Solution

    |

  13. The convex side of a thin concavo-convex lens of glass of refractive i...

    Text Solution

    |

  14. The source is placed 30 cm from a convex lens which has a focal length...

    Text Solution

    |

  15. If final image after two refractions through the lens and one reflecti...

    Text Solution

    |

  16. A point object O is placed at a distance of 20 cm from a convex lens o...

    Text Solution

    |

  17. The focal length of a thin convex-lens is 30cm. At a distance of 10 cm...

    Text Solution

    |

  18. A plano-convex glass lens (mu(g)=3//2) of radius of curvature R=10cm i...

    Text Solution

    |

  19. On a horizontal plane mirror, a thin equiconvex lens of glass is place...

    Text Solution

    |

  20. A pin is placed 10cm in front of a convex lens of focal length 20cm, m...

    Text Solution

    |