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A converging lens forms a real image I o...

A converging lens forms a real image `I` on its optic axis. A rectangular galss slab of refractive index `mu` and thickness `t` is introduced between the lens and `I`. `I` will move

A

towards the lens by `t(1-(1)/(mu))`

B

away from the lens by `t(1-(1)/(mu))`

C

towards the lens by `t(mu - 1)`

D

away from the lens by `t(mu - 1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Shift due to glass slab is given by `t(1-(1)/(mu))` and for the directed refer ray diagram.

From ray diagram we can see that new location of I is shifted further away from lens on its principal axis.
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MODERN PUBLICATION-RAY OPTICS AND OPTICAL INSTRUMENTS-OBJECTIVE TYPE QUESTIONS (A. MULTIPLE CHOICE QUESTIONS)
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  10. An object is kept at a distance 20 cm from a convex mirror of focal le...

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  12. Two concave lenses are kept in contact and magnitude of equivalent foc...

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  14. A thin lens is made of glass of refractive index 1.6. Both the surface...

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  15. Two thin concave lenses of focal lengths 10 cm and 30 cm and a thin co...

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  17. A very small object of length a is kept along the axis of a concave mi...

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  18. There is symmetric bi-convex lens and it is cut in two pieces by a pla...

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  19. There is a symmetric bi-convex lens and it is cut in two equal parts b...

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  20. There is an equilateral prism of material of refractive index 1.5. Lig...

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