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A convex lens of glass (mu = 1.5) is imm...

A convex lens of glass (`mu` = 1.5) is immersed in water. Compared to its power in air, its power in water-

A

increases

B

decreases

C

remain same

D

nothing can be predicted

Text Solution

Verified by Experts

The correct Answer is:
B
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MOTION-RAY OPTICS-Exercise-1
  1. A point object is placed in air at a distance of 40 cm from a concave ...

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  2. An object is placed at a distance of 10 cm (in a medium of μ = 1) from...

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  3. A convex lens of glass (mu = 1.5) is immersed in water. Compared to it...

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  4. The radii of curvatures of a double convex lens are 15 cm and 30 cm, a...

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  5. The two spherical surfaces of a double concave lens have the same radi...

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  6. A thin lens is made with as material having refractive index mu=1.5. b...

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  7. Focal length of a convex lens of refractive index 1.5 is 2 cm. Focal l...

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  8. The focal length of a plano-convex lens is equal to its radius of curv...

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  9. A convex lens of focal length f will form a magnified real image of an...

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  10. IMAGE FORMATION FROM CONCAVE LENS

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  11. A lens of power +2 dioptres is placed in contact with a lens of powe...

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  12. When two thin lenses are kept in contanct, the focal length of the com...

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  13. A thin convex lens of focal length 10 cm and a thin concave lens of f...

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  14. A convex lens of focal length A and a concave lens of focal length B a...

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  15. When a thin convex lens is put in contact with a thin concave lens of ...

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  16. If I(1) and I(2) be the size of the images respectively for the two po...

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  17. A convex lens forms a real image on a screen placed at a distance 60 c...

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  18. A plano-convex lens when silvered on the plane side behaves like a con...

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  19. The plane surface of a plano-convex lens of focal length f is silvered...

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

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