Home
Class 12
PHYSICS
Two thin equiconvex lenses each of focal...

Two thin equiconvex lenses each of focal length 0.2 m are placed coaxially with their optic centres 0.5m apart. Then find the focal length of the combination.

A

1.1 m

B

`-0.4` m

C

`-0.1`m

D

0.1 m

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND WAVE OPTICS

    VMC MODULES ENGLISH|Exercise EFFICIENT|49 Videos

  • RAY OPTICS AND WAVE OPTICS

    VMC MODULES ENGLISH|Exercise IMPECCABLE|58 Videos

  • RAY OPTICS AND WAVE OPTICS

    VMC MODULES ENGLISH|Exercise IMPECCABLE|58 Videos

  • RAY OPTICS

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE-J|10 Videos

  • REVISION TEST-15 JEE - 2020

    VMC MODULES ENGLISH|Exercise PHYSICS|25 Videos

Similar Questions

Explore conceptually related problems

Two similar thin equi-convex lenses, of focal f each, are kept coaxially in contact with each other such that the focal length of the combination is F_(1) , When the space between the two lens is filled with glycerin (which has the same refractive index (mu=1.5) as that of glass) then the equivlent focal length is F_(2) , The ratio F_(1): F_(2) will be

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 convex lens of focal length f_(1) is kept in contact with a concave lens of focal length f_(2) . Find the focal length of the combination.

A thin convex lens of focal length 20 cm is kept in contact with a thin concave lens of focal length 15 cm. Find the focal length and the nature of the combination.

Find the power of a concave lens of focal length 2 m .

Two convex lenses f focal length 20 cm each are placed coaxially with a separation of 60 cm between them. find the image of a distance object formed by the combination by a. using thin les formula separately for the two lenses and b. using the equivalent lens. Note that although the combination forms a real image of as distance object on the other side, it is equivalent to as diverging lens as far as the locatiion of the final image is concerned.

Two thin lenses of focal lengths 20 cm and -20 cm are placed in contact with other. The combination has a focal length equal to

A convex lens of focal length 30 cm is placed coaxially in contact with a concave lens of focal length 40 cm. Determine the power of the combination. Will the system be converging or diverging in nature?

Two thin lenses, one of focal length + 60 cm and the other of focal length – 20 cm are put in contact. The combined focal length is

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.

VMC MODULES ENGLISH-RAY OPTICS AND WAVE OPTICS -ENABLE
  1. A convex lens of focal length 0.2 m and made of glass (.^(a)mu(g) = 1....

    Text Solution

    |

  2. The angle of minimum deviation for an incident ligt ray on an equillat...

    Text Solution

    |

  3. Two thin lenses of focal length f(1) and f(2) are in contact and coaxi...

    Text Solution

    |

  4. An equiconvex lens in cut into two halves along (i) XOX' f,f',f'' be t...

    Text Solution

    |

  5. Two thin equiconvex lenses each of focal length 0.2 m are placed coaxi...

    Text Solution

    |

  6. A prism of a certain angle deviates the red and blue rays by 8^@ and 1...

    Text Solution

    |

  7. Two coherent waves are represented by y(1)=a(1)cos(omega) t and y(2)=a...

    Text Solution

    |

  8. Interference pattern can be produced by two identical sources. Here th...

    Text Solution

    |

  9. The amplitude of two interfering waves are a and 2a respectively. The ...

    Text Solution

    |

  10. If the path difference between the interfering waves is n lambda, then...

    Text Solution

    |

  11. The intensity of interference waves in an interference pattern is same...

    Text Solution

    |

  12. The maximum intensities produced by two coherent waves of intensity I(...

    Text Solution

    |

  13. The equation of two interfering waves are y(1) =b(1)cos omegat and y(2...

    Text Solution

    |

  14. If two waves represented by y(1)=4sinomegat and y(2)=3sin(omegat+(pi)/...

    Text Solution

    |

  15. Two coherent light beams of intensities I and 4I produce interference ...

    Text Solution

    |

  16. In young's double slit experiment, the seperation between the slits is...

    Text Solution

    |

  17. In Young's double-slit experiment, the slit are 0.5 mm apart and the i...

    Text Solution

    |

  18. In Young's experiment the distance between two slits is d/3 and the di...

    Text Solution

    |

  19. In a Young's double slit experiment, I0 is the intensity at the centra...

    Text Solution

    |

  20. In a double experiment D=1m, d=0.2 cm and lambda = 6000 Å. The distanc...

    Text Solution

    |