Home
Class 12
PHYSICS
A point source of light is kept at a di...

A point source of light is kept at a distance of `15cm` from a converging lens,on its optical axis.The focal length of the lens is `10cm` and its diameter is `3cm` ,A screen is placed on the other side of the lens ,perpendicular to the axis of lens,at a distance `20cm` from it.Then find the area of the illuminated part of the screen?

Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practive Exercise 5.7|7 Videos

  • GEOMETRICAL OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practive Exercise 5.8|7 Videos

  • GEOMETRICAL OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practive Exercise 5.5|12 Videos

  • ELECTROSTATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numberical Problems|73 Videos

  • HEAT AND THERMAL EXPANSION

    PHYSICS GALAXY - ASHISH ARORA|Exercise UNSOLVED NUMRICAL PROBLEMS FOR PREPARATION OF NSEP, INPhO & IPhO|82 Videos

Similar Questions

Explore conceptually related problems

A point source of light is kept at a distanceof 15cm from a converging lens,on its optical axis.The focal length of the lens is 10cm and its diameter is 2cm ,A secreen is placed on the other side of the lens ,perpendicualr to the axis fo lens,at a distance 20cm from it.Then find the area of the illuminated part of the screen?

A point source of light is placed at a distance of 2f from a converging lens of focal length f. The intensity onteh other side of the lens is maximum at a distance

An index pin of height 3 cm is kept at a distance of 15 cm from a convex lens of focal length 10 cm. The image is obtained on a screen placed on the other side of the lens. What is the height and nature of the image ?

A luminous object is placed at a distance of 40 cm from a converging lens of focal length 25 cm. The image obtained in the screen is

An illuminated object is placed at a distance of 20 cm from a converging lens of focal length 15 cm. The image obtained on the screen is:

There is a convex lens of focal length 20 cm. An object of height 3 cm is placed perpendicular to principal axis of lens at a distance 10 cm from the lens. Find the size of image.

An object is placed at a distance of 20 cm from a convex lens of focal length 10 cm . The image is formed on the other side of the lens at a distance

PHYSICS GALAXY - ASHISH ARORA-GEOMETRICAL OPTICS-Practive Exercise 5.6
  1. A point source of light is kept at a distance of 15cm from a convergi...

    Text Solution

    |

  2. A 5.0 diopter lens forms a virtual image which is 4 times the object p...

    Text Solution

    |

  3. A point object is placed at a distance of 25 cm from a convex lens of ...

    Text Solution

    |

  4. A convex lens of focal length 20 cm and a concave lens of focal length...

    Text Solution

    |

  5. A convex lens of focal length 20cm is placed 10cm in front of a convex...

    Text Solution

    |

  6. A converging lens of focal length 20cm is separated 8 cm from a diverg...

    Text Solution

    |

  7. Two symmetric double convex lenses A and B have same focal length but ...

    Text Solution

    |

  8. An object is placed at 20 cm left of the convex lens of focal length 1...

    Text Solution

    |

  9. In the figure- it is shown,the focal length f of the two thin convex l...

    Text Solution

    |

  10. A convex lens of focal length 10cm is placed 30 cm in front of a secon...

    Text Solution

    |

  11. A small pin of size 5 mm is placed along principal axis of a convex le...

    Text Solution

    |

  12. An object is kept at a distance of 16 cm from a thin lens and the imag...

    Text Solution

    |

  13. An object is placed midway between the lens and the mirror as shown in...

    Text Solution

    |

  14. Two thin convex lenses of focal lengths f(1) and f(2) are separated by...

    Text Solution

    |

  15. A convex lens of focal length 15 cm and a concave mirror of focal leng...

    Text Solution

    |

  16. A convex lens of focal length 15 cm is placed in front of a convex mir...

    Text Solution

    |