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A lens behaves as a converging lens in a...

A lens behaves as a converging lens in air and a diverging lens in water. The refractive index of the material is (refractive index of water `=1.33`)

A

equal to unity

B

equal to `1.33`

C

between unity and `1.33`

D

greater than `1.33`

Text Solution

Verified by Experts

The correct Answer is:
C
Lens changes its behaviour if `R`.`I`. Of surrounding becomes greater than `R`.`I`. Of lens. `mu_("lens")lt1.33`
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RESONANCE-GEOMATRICAL OPTICS -Exercise-1
  1. Two symmetric double convex lenses A and B have same focal length but ...

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  2. When a lens of power P (in air) made of material of refractive index m...

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  3. A lens behaves as a converging lens in air and a diverging lens in wat...

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  4. The sun subtends an angle of (1//2)^(@) on earth. The image of sun is ...

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  5. A thin lens focal length f(1) and its aperture has diameter d. It form...

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  6. A thin symmetrical double convex lens of power P is cut into three par...

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  7. In the figure shown, there are two convex lenses L(1) and L(2) having ...

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  8. An object is placed at a distance u from a concave mirror and its real...

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  9. A virtual erect image by a diverging lens is repesented by (u ,v ,f , ...

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  10. What should be the value of distance d so that final image is formed o...

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  11. A thin linear object of size 1mm is kept along the principal axis of a...

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  12. A biconvex lens is used to project a slide on screen. The slide is 2 c...

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  13. The minimum distance between a real object and its real image formed b...

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  14. Two planoconvex lenses each of the focal length of10cm&refractive inde...

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  15. A plano-convex lens, when silvered at its plane surface is equivalent ...

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  16. In the above question the radius of curvature of the curvature of the ...

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  17. The focal length of a plano-concave lens is -10 cm , then its focal le...

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  18. A convex lens of focal length 25 cm and a concave lens of focal length...

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  19. The dispersion of light in a medium implies that :

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  20. Critical angle of light passing from glass to air is minimum for

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