Home
Class 10
PHYSICS
The power of a concave lens of focal len...

The power of a concave lens of focal length 50 cm is :

A

`+2D`

B

`+0.02 D`

C

`-0.02 D`

D

`-2 D`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • LIGHT - REFLECTION AND REFRACTION

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS SECTION (VERY SHORT ANSWER TYPE QUESTIONS) VSA|34 Videos

  • LIGHT - REFLECTION AND REFRACTION

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS SECTION (SHORT ANSWER [SA] TYPE - I QUESTIONS)|28 Videos

  • LIGHT - REFLECTION AND REFRACTION

    ZEN PUBLICATION|Exercise QUESTIONS SECTION (TEXTUAL EXERCISE)|34 Videos

  • ELECTRICITY

    ZEN PUBLICATION|Exercise ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE CHOICE QUESTIONS)|60 Videos

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    ZEN PUBLICATION|Exercise Additional question section (Higher-order thinking skills [HOTS] questions)|20 Videos

Similar Questions

Explore conceptually related problems

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

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

An object is kept 15 cm in front of a concave lens of focal length 20 cm. If the object is moved by 3 cm towards the lens, by what factor will the magnifiation change ?

An object is placed at a distance of 20 cm from the pole of a concave mirror of focal length 10 cm. The distance of the image formed is

A convex lens of focal length 10 cm is placed in contact with a concave lens of focal length 20 cm. What is the nature and focal length of the combination ?

ZEN PUBLICATION-LIGHT - REFLECTION AND REFRACTION-ZEN ADDITIONAL QUESTIONS SECTION (MULTIPLE - CHOICE QUESTIONS)
  1. An object is kept 15 cm in front of a concave lens of focal length 20 ...

    Text Solution

    |

  2. The nature and size of an object placed focus F(1) of a convex lens is...

    Text Solution

    |

  3. The power of a concave lens of focal length 50 cm is :

    Text Solution

    |

  4. u, v, f and r represents the object distance, image distance, focal le...

    Text Solution

    |

  5. When light goes from one medium to another, the characteristics that r...

    Text Solution

    |

  6. Reflective index of glass with respect to air is 3/2. What is the refr...

    Text Solution

    |

  7. When a light ray travels from one medium to another with the same refr...

    Text Solution

    |

  8. The relation between refractive index of a medium (mu) in terms of vel...

    Text Solution

    |

  9. The bending of a light ray due to change in velocity of light as the m...

    Text Solution

    |

  10. To form an image twice the size of the object, using a convex lens of ...

    Text Solution

    |

  11. The combination of a convex lens and a concave lens each of focal leng...

    Text Solution

    |

  12. A dentist uses a concave mirror to examine the teeth. The position of ...

    Text Solution

    |

  13. In the figure, AB is an object of height 2 cm. The position and height...

    Text Solution

    |

  14. Concave mirrors are used as reflectors in the headlights of vehicles, ...

    Text Solution

    |

  15. Which of these is true about the value of linear magnification (|m|) o...

    Text Solution

    |

  16. The refractive index of a given pair of media is independent on which ...

    Text Solution

    |

  17. A student has obtained a point image of a distant object using a conve...

    Text Solution

    |

  18. In the incomplete ray diagram given below, the object AB would be at t...

    Text Solution

    |

  19. Two lenses of power +3.5 D and - 2.5 D are placed in contact. The lens...

    Text Solution

    |

  20. To obtain a diminished image of an object from a concave mirror, posit...

    Text Solution

    |