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According to lens formual we have (1)/(v...

According to lens formual we have `(1)/(v) + (1)/(u) = (1)/(f)`, where u = distance of the object from the lens, v = distance of the image from the lens and f = focal length of given lens.

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The correct Answer is:
False
As per lens formual `(1)/(v) - (1)/(u) = (1)/(f)`
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Knowledge Check

  • If the distances of an object and its virtual image from the focus of a convex lens of focal length f are 1 cm each, then f is

    A
    `4 cm`
    B
    `(sqrt(2)+1)cm`
    C
    `2sqrt(2)cm`
    D
    `(2+sqrt(2)) cm`

  • A concave lens of focal length f produces an image (1/x) of the size of the object, the distance of the object from the lens is

    A
    `(x-1)f`
    B
    `(x+1)f`
    C
    `{(x-1)//x]f`
    D
    `{(x+1)//x}f`

  • A concave lens of focal length (1)/(3)m forms a real, inverted image twice in size of the object. The distance of the object from the lens is

    A
    `0.5 m`
    B
    `0.166m`
    C
    `0.33 m`
    D
    `1m `

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