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Emma is observing an image of a pencil t...

Emma is observing an image of a pencil through a convex lens, if she wants to see the erect image of the pencil she should place the pencil

A

at the principal focus `(F_(1))` of the lens

B

at the distance `2F_(1)` from the lens

C

at the distance less than the focal length of the lens

D

any where beyond the point `2F_(1)`

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Knowledge Check

  • Erect image by convex lens is always

    A
    same size
    B
    magnified
    C
    diminished
    D
    none of these

  • A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens

    A
    away from the screen
    B
    towards the screen
    C
    to a position very far away from the screen
    D
    either towards or away from the screen depending upon the position of the object.

  • A student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens:

    A
    away from the screen
    B
    towards the screen
    C
    to a position very far away from the screen
    D
    either towards or away from the screen depending upon the position of the object.

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