Home
Class 11
PHYSICS
An equiconvex lens has power P. It is cu...

An equiconvex lens has power P. It is cut into two symmetrical halves by a plane containing the principal axis. The power of one part will be,

A

P

B

0

C

`frac(P)(2)`

D

`frac(P)(4)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Motion in a plane

    TARGET PUBLICATION|Exercise Exercise|340 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos

Similar Questions

Explore conceptually related problems

The equiconvex lens has focal length f. If is cut perpendicular to the principal axis passing through optical centre, then focal length of each half is

If a lens is cut into two pieces perpendicular to the principal axis and only one part is used, the intensity of the iamage will be

A spring has a certain mass suspended from it and its period for vertical oscillation is T. The spring is now cut into two equal halves and the same mass is suspended from one of the halves. The period of vertical oscillation is now

An equiconvex lens is cut into two halves along (i) XOX' and (ii) YOY' as shown in the figure. Let f, f ', f " be the focal lengths of the complete lens, of each half in case (i), and of each half in case (ii), respectively. Choose the correct statement form the following.

A rectangular magnet suspended freely has a period of oscillation equal to T. Now it is broken into two equal halves each having half of the original length and one piece is made to oscillate freely. Its period of oscillation is T.The ratio of

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 thermally insulated container is divided into two parts by a screen . In one part , the pressure and temperature are P and T for an ideal gas filled. In the second part it is vacuum. If now a small hole is created in the screen , then the temperature of the gas will

A spherical shell is cut into two pieces along a chord as shown in the figure. P is a point on the plane of the chord. The gravitational field at P due to the upper part is I_(1) , and that due to the lower part is I_(2) . What is the relation between them?

A wire of length l is cut in to two parts. One part is bent into a circle and the other into a square. Show that the sum of the areas of the circle and the square is least, if the radius of the circle is half the side of the square.

TARGET PUBLICATION-OPTICS-EXERCISE
  1. A point object ‘O’ is placed on the axis of a cylindrical piece of gla...

    Text Solution

    |

  2. Focal length of a convex lens is 20 cm and its R.I. is 1.5. It produce...

    Text Solution

    |

  3. An equiconvex lens has power P. It is cut into two symmetrical halves ...

    Text Solution

    |

  4. A plano-convex lens of unknown material and unknown focal length is gi...

    Text Solution

    |

  5. A candle placed 25 cm from a lens forms and image on a screen placed 7...

    Text Solution

    |

  6. Calculate the focal length of a reading glass of a person if his dista...

    Text Solution

    |

  7. A converging beam of rays is incident on a diverging lens. Having pass...

    Text Solution

    |

  8. An object is located 4 m from the first of two thin converging lenses ...

    Text Solution

    |

  9. A person can see clearly objects only when they lie between 50 cm and ...

    Text Solution

    |

  10. Two convex lenses of focal lengths f(1)andf(2) form images with magnif...

    Text Solution

    |

  11. The equiconvex lens has focal length f. If is cut perpendicular to the...

    Text Solution

    |

  12. A plano-convex lens is made of material having refractive index 1.5. T...

    Text Solution

    |

  13. A convex lens (with material of refractive index of 3/2) has two surfa...

    Text Solution

    |

  14. A double convex lens has focal length 25 cm. The radius of curvature o...

    Text Solution

    |

  15. The power of a biconvex lens is 10 dioptre and the radius of curvature...

    Text Solution

    |

  16. A convex lens of glass (mu=1.5) has a focal length of 8 cm when placed...

    Text Solution

    |

  17. A convex lens of glass (mu(g)=1.45) has focal length f(g) is air. The ...

    Text Solution

    |

  18. A thin convex lens made from crown glass (mu=(3)/(2)) has focal f. Whe...

    Text Solution

    |

  19. Two similar thin equiconvex lenses, of focal length f each, are kept c...

    Text Solution

    |

  20. Two identical thin plano-convex glass lenses (refractive index 1.5) ea...

    Text Solution

    |