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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?

Answer

Step by step text solution for 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? by PHYSICS experts to help you in doubts & scoring excellent marks in Class 12 exams.

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Knowledge Check

  • 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
    3 cm, erect
    B
    6 cm, erect
    C
    6 cm, inverted
    D
    1.5 cm, inverted

  • A candle is placed at a distance of 20 cm from a converging lens of focal length 15 cm. The image obtained on the screen is:

    A
    upright and magnified
    B
    inverted and magnified
    C
    inverted and diminished
    D
    upright and diminished.

  • An object is placed at a distance of 15 cm from a convex lens of focal length 10 cm. The image obtained on the screen is :

    A
    upright and magnified
    B
    inverted and magnified
    C
    inverted and diminished
    D
    upright and diminished

    • Similar Questions

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