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A concave lens of focal length f produce...

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`

Text Solution

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The correct Answer is:
A
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RESNICK AND HALLIDAY-GEOMETRICAL OPTICS : REFRACTION-Practice questions(single correct choice type)
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  2. The dispersion for a medium of wavelength lambda is D, then the disper...

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  3. A concave lens of focal length f produces an image (1/x) of the size o...

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  5. A thin biconvex lens of focal length f=25cm forms a real image of a re...

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  6. A laser beam and a sound wave from directional sources both enter a li...

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  7. An air bubble inside a glass slab (µ=1.5) appears 6 cm when viewed fro...

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  8. A bird is flying 3m above the surface of water. To a fish underwater, ...

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  9. In the previous question, if the bird is diving vertically down with s...

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  11. A flat glass slab of thickness 6cm and index 1.5 is placed in front of...

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  12. Critical angle of glass is theta(1) and that of water is theta(2). The...

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  13. A ray of light travels from a medium of refractive index n into air. I...

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  14. A real object is kept in air and refraction occurs at the convex bound...

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  15. Half the surface of a transparent sphere of refractive index 2 is silv...

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  16. A solid transparent sphere has a small, opaque dot at its center. When...

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  17. An object was placed upright 25cm in front of a converging lens with a...

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  18. A lens behaves as a converging lens in air and as a diverging lens in ...

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  19. A convergent lens of focal length 20cm and made of a material with ref...

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  20. A parallel beam of light is incident on a converging lens parallel to ...

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