Home
Class 12
PHYSICS
A converging lens L(1) of focal length 2...

A converging lens `L_(1)` of focal length 20 cm is separated by 8 cm from a diverging lens `L_(2)` of focal length 30cm. A parallel beam of light falls on `L_(1)` after passing through `L_(2)` is focussed at point P. Calculate V.

A

(40 cm, 30 cm)

B

(20 cm, 35.3 cm)

C

(20 cm, 42.2 cm)

D

(60 cm, 20 cm)

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II LECTURE SHEET(ADVANCED) MORE THAN ONE CORRECT ANSWER TYPE QUESTIONS)|3 Videos

  • GEOMETRICAL OPTICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-II LECTURE SHEET(ADVANCED) LINKED COMPREHENSION TYPE QUESTIONS)|8 Videos

  • GEOMETRICAL OPTICS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL-I (MAIN) STRAIGHT OBJECTIVE TYPE QUESTIONS)|22 Videos

  • ELEMENTS OF VECTORS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

  • LAWS OF MOTION

    AAKASH SERIES|Exercise PRACTICE EXERCISE|106 Videos

Similar Questions

Explore conceptually related problems

A converging lens of focal length 40 cm is kept in contact with a diverging lens of focal length 30 cm. Find the focal length of the combination.

A converging lens of focal length 5.0cm is placed in contact with a diverging lens of focal length 10.0cm. Find the combined focal length of the system.

A diverging lens with magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of magnitude of focal length 20 cm . A beam of parallel light falls on the diverging lens. The final image formed is.

A converging lens of focal length 30 cm is placed in contact with another converging lens of unknown focal length, then possible value for focal length of combination is

A parallel beam of rays is incident on a convergent lens with a focal length of 40 cm. Where should a divergent lens with a focal length of 15 cm be placed for the beam of rays to remain parallel after passing through the two lenses.

Two plano-convex lenses of focal lengths 20cm and 30cm are placed together to form a double convex lens. The final focal length will be

An illuminated point object O is kept 20 cm from a thin convex lens L_(1) of focal length 15 cm as shown below. A thin diverging lens L_(2) of focal length 25 cm is kept co - axial with the first lens and 35 cm from it, as shown in figure below : Find the position of the final image formed by this combination of lenses.

A convex lens of focal length 100 cm and a concave lens of focal length 10 cm are placed coaxialiy at a separation of 90 cm. If a parallel beam of light is incident on convex lens, then after passing through the two lenses the beam

A convex lens of focal length 20cm is placed 10cm away from a second convex lens of focal length 25 cm. What wil be the location of the image of an object at 30 cm in front of the first lens?

Two converging lenses of focal lengths f_(1)=10cm and f_(2)=20cm are placed at some separation. A parallel beam of light is incident on first lens. Then,

AAKASH SERIES-GEOMETRICAL OPTICS-ADDITIONAL PRACTICE EXERCISE (LEVEL-II LECTURE SHEET(ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS)
  1. A light ray is incident at an angle of incedence (pi//4). The graph of...

    Text Solution

    |

  2. Light is incident from glass (mu = 1.50) to water (mu = 1.33) find th...

    Text Solution

    |

  3. A ray of light is incident at an angle of 75^(@) into a medium having ...

    Text Solution

    |

  4. A beam of parallel rays of width b cm propagates in glass at an angle ...

    Text Solution

    |

  5. A small object of height 0.5 cm is placed in front of a convex surface...

    Text Solution

    |

  6. A ball is kept at a height h above the surface of a heavy transparent ...

    Text Solution

    |

  7. A ring of radius 1cm is placed 1m in front of a spherical glass ball...

    Text Solution

    |

  8. The radii of curvature of two spherical surfaces of a concave convex l...

    Text Solution

    |

  9. A light ray travelling parallel to the principal axis of a convex lens...

    Text Solution

    |

  10. Twot thin lenses when placed in contact, then the power of combination...

    Text Solution

    |

  11. A convex lens is placed some where between an object and a screen whic...

    Text Solution

    |

  12. A point object moves along the principal axis of a convex lens of foca...

    Text Solution

    |

  13. A thin plano-convex lens of focal length f is split into two halves. O...

    Text Solution

    |

  14. A converging lens L(1) of focal length 20 cm is separated by 8 cm from...

    Text Solution

    |

  15. A point object is placed at a distance of 20 cm from a thin plano-conc...

    Text Solution

    |

  16. Figure shows an arrangement ofan equiconvex lens (f=20 cm in air) and ...

    Text Solution

    |

  17. A point object O is placed at a distance of 0.3m from a convex lens (f...

    Text Solution

    |

  18. A small object stuck on the surface of a glass sphere (n=1.5) is viewe...

    Text Solution

    |

  19. A plano-convex lens has thickness 4cm. When places on a horizontal tab...

    Text Solution

    |

  20. In the given diagram find the position where the equivalent lens can b...

    Text Solution

    |