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A concave lens of focal length f produce...

A concave lens of focal length f produces an image `(1)/(4)` of the size of the object, the object should be kept at ____ from the lens.

A

2 f

B

3 f

C

4 f

D

5 f

Text Solution

Verified by Experts

The correct Answer is:
B
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TARGET PUBLICATION-RAY OPTICS-EVALUATION TEST
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  5. Assertion : If objective and eye lens of a mcroscope are interchanged ...

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  6. The convex surface of a thin concavo-convex lens of glass of refractiv...

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  7. Focal length of a convex/ concave mirror depends on

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  9. Magnifying power of a telescope in normal adjustment when final images...

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  10. Two plano-concave lenses (1 and 2) of glass of refractive index 1.5 ha...

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  11. Assertion : If radius of curvature of mirror is doubled, focal length ...

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