Home
Class 12
PHYSICS
A concave lens of glass, refractive inde...

A concave lens of glass, refractive index 1.5 has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75, it will behave as a

A

Convergent lens of focal length 3.5 R

B

Convergent lens of focal length 3.0 R

C

Divergent lens of focal length 3.5 R

D

Divergent lens of focal length 3.0 R

Text Solution

Verified by Experts

The correct Answer is:
A
`1/f=(mu_(lens)-1)/(mu_(lens)/mu_(liq) -1)`
Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE-2 (H.W)(REFRACTION THROUGH A PRISM)|9 Videos

  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE-2 (H.W)(DISPERSION BY A PRISM)|4 Videos

  • RAY OPTICS AND OPTICAL INSTRAUMENTS

    NARAYNA|Exercise EXERCISE-2 (H.W)(REFRACTION THROUGH SPHERICAL SURFACES)|5 Videos

  • NUCLEI

    NARAYNA|Exercise ASSERTION & REASON|5 Videos

  • SEMI CONDUCTOR DEVICES

    NARAYNA|Exercise Level-II (H.W)|36 Videos

Similar Questions

Explore conceptually related problems

A convax lens of glass ,refractive index 1.5 ,has both surfaces of same radius of curvature R. On immersion in a medium of refractive index 1.75 ,it wuill behaves as a (A)convergent lens of focal length 3.5R (B)convergent lens of focal length 3.0R (C)divergent lens of focal length 3.5R (D)divergent lens of focal length 3.0R

A convex lens made up of glass of refractive index 1.5 is dippedin turn (i) in a medium of refractive index 1.65 (ii) in a medium of refractive index 1.33 (a) Will it behave as converging or diverging lens in the two cases ? (b) How will its focal length changes in the two media ?

A double convex lens of + 5 D is made of glass of refractive index 1.5 with both faces of equal radii of curvature. Find the value of curvature.

A diverging lens of refractive index 1.5 and focal length 15 cm in air has same radii of curvature for both sides. If it is immersed in a liquid of refractive index 1.7 , calculate focal length of the lens in liquid.

The adjacent figure shows a thin plano-convex lens of refractive index mu_1 and a thin plano-concave lens of refractive index mu_2 , both having same radius of curvature R of their curved surfaces. The thin lens of refractive index mu_3 has radius of curvature R of both its surfaces. This lens is so placed in between the plano-convex and plano-concave lenses that the plane surfaces are parallel to each other. The focal length of the combination is

A thin convex lens made of glass of refractive index 3//2 has a power of 5 D. When it is immersed in a liquid of refractive index mu , it behaves like a divergent lens of focal length 1 m. Calculate the refractive index of the liquid.

A thin glass (refractive index 1.5) lens has optical power of -5D in air. Its optical power in a liquid medium with refractive index 1.6 will be

NARAYNA-RAY OPTICS AND OPTICAL INSTRAUMENTS -EXERCISE-2 (H.W)(LENSES & THEIR COMBINATIONS)
  1. A slide projector gives magnification of 10. If it projects a slide of...

    Text Solution

    |

  2. The radius of curvature of a thin planoconvex lens is 10 cm and the re...

    Text Solution

    |

  3. The graph between object distance u and image distance v for a lens gi...

    Text Solution

    |

  4. In the displacement method a conves lens is placed in between an objec...

    Text Solution

    |

  5. A convex lens makes a real image 4 cm long on a screen. When the lens ...

    Text Solution

    |

  6. A convex lens of focal length 50 cm, a concave lens of focal length 50...

    Text Solution

    |

  7. Arrange the following combinations in the increasing order of focal le...

    Text Solution

    |

  8. The image of an object, formed by a plano-convex lens at a distance of...

    Text Solution

    |

  9. The radius of curvature of the convex surface of a planoconvex lens is...

    Text Solution

    |

  10. An equiconcave lens having radius of curvature of each surface 20 cm h...

    Text Solution

    |

  11. If R(1) and R(2) are the radii of curvature of double convex lens made...

    Text Solution

    |

  12. A concave lens of glass, refractive index 1.5 has both surfaces of sam...

    Text Solution

    |

  13. A thin equi-convex lens is made of glass of refractive index 1.5 and i...

    Text Solution

    |

  14. A convex Lens of focal Length "0.15m" is made of refractive "(3)/(2)" ...

    Text Solution

    |

  15. A diverging lens of focal length 10 cm having refractive index 1.5 is ...

    Text Solution

    |

  16. A plano convex lens a thickness of 4 cm. Its radius of curvature is 20...

    Text Solution

    |

  17. Two equi convex lenses each of focal lengths 20 cm and refractive inde...

    Text Solution

    |

  18. If R1 and R2 are the radii of curvature of a double convex lens. The l...

    Text Solution

    |

  19. A thin convergent glass lens (mug=1.5) has a power of +5.0D. When this...

    Text Solution

    |

  20. The refractive index of a material of a plano concave lens is 5/3. Its...

    Text Solution

    |