Home
Class 12
PHYSICS
The power in dioptre of an equi-convex l...

The power in dioptre of an equi-convex lens with radii of curvature of 10cm and refractive index 1.6 is

A

`+12`

B

`+18`

C

`+1.2`

D

`+1.8`

Text Solution

Verified by Experts

The correct Answer is:
A
`1/f=P=(mu-1)(1/R_1-1/R_2)`
`=(1.6-1)(1/0.1-1/(-0.1))`
`=+12 D`
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    DC PANDEY|Exercise Objective Questions|1 Videos

  • REFRACTION OF LIGHT

    DC PANDEY|Exercise Level 1 Subjective|29 Videos

  • REFRACTION OF LIGHT

    DC PANDEY|Exercise Level 1 Assertion And Reason|13 Videos

  • REFLECTION OF LIGHT

    DC PANDEY|Exercise Subjective|9 Videos

  • SEMICONDUCTORS

    DC PANDEY|Exercise Subjective|12 Videos

Similar Questions

Explore conceptually related problems

The power of a biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is

A plano convex lens of radius of curvature 30 cm and refractive index 1.5 is kept in air. Find its focal length (in cm).

What is the refractive index of material of a plano-convex lens, if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ?

What is the refractive index of material of a plano-convex lens , if the radius of curvature of the convex surface is 10 cm and focal length of the lens is 30 cm ?

The radii of curvature of a double convex lens are 30 cm and 60 cm and its refractive index is 1.5. calculate its focal length.

The radii of curvatures of a double convex lens are 15 cm and 30 cm, and its refractive index is 1.5. Then its focal length is -

Power of biconvex lens is 10 diopters and radius of curvature of each surface is 10cm.Then refractive index of material of lens is

Find the refractive index of the material of a plano-convex lens, if the radius of curvature of the convex surface is 20 cm and focal length of the lens is 60 cm?

DC PANDEY-REFRACTION OF LIGHT-Level 1 Objective
  1. A plane glass slab is placed over various coloured letters. The letter...

    Text Solution

    |

  2. Critical angle of light passing from glass to air is least for

    Text Solution

    |

  3. The power in dioptre of an equi-convex lens with radii of curvature of...

    Text Solution

    |

  4. The refractive index of water is 4//3. The speed of light in water is

    Text Solution

    |

  5. White light is incident from under water on the the water-air interfac...

    Text Solution

    |

  6. When light enters from air to water, then its

    Text Solution

    |

  7. In the figure shown sin i/sin r is equal to

    Text Solution

    |

  8. In figure, the reflected ray B makes an angle 90^@ with the ray C. If ...

    Text Solution

    |

  9. A prism of apex angle A=60^@ has the refractive index mu=sqrt2. The an...

    Text Solution

    |

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

    Text Solution

    |

  11. A ray of light, travelling in a medium of refractive index mu, is inci...

    Text Solution

    |

  12. The given equi-convex lens is broken into four parts and rearranged as...

    Text Solution

    |

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

    Text Solution

    |

  14. Two convex lenses of focal length 10 cm and 20 cm respectively placed ...

    Text Solution

    |

  15. A prism can have a maximum refracting angle of (thetaC=critical angle ...

    Text Solution

    |

  16. A ray is ihncident at an angle of incidence ii on one surface of a pri...

    Text Solution

    |

  17. The refracting angle of a prism is A and refractive index of the mater...

    Text Solution

    |

  18. A prism of refractive index sqrt2 has refractive angle 60^@. In the or...

    Text Solution

    |

  19. The focal length of a combination of two lenses is doubled if the sep...

    Text Solution

    |

  20. A convexo-concave convergent lens is made of glass of refractive index...

    Text Solution

    |