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The refractive index of the material ofa...

The refractive index of the material ofa double convex lens is 1.5 and its focal length is 5 cm. If the radii of curvature are equal, the value of the radius of curvature (in cm) is

A

5

B

6.5

C

8

D

9.5

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The correct Answer is:
A
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AAKASH SERIES-GEOMETRICAL OPTICS-ADDITIONAL PRACTICE EXERCISE -I (LEVEL-I(MAIN) STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  3. A glass plate has a thicknes t and refractive index mu. The angle of i...

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  4. Wave length of light in denser mediumis 4000Å, it is grazing into a ra...

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  5. A light ray travels from a denser medium to a rarer medium. If the cri...

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  6. A point source of light is placed at the bottom of a water lake. If th...

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  7. The refractive index of the material ofa double convex lens is 1.5 and...

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  8. A double convex lens of refractive index 1.5 has radii of 20 cm. Incid...

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  9. A diverging meniscus lens of radii of curvatures 25 cm and 50 cm has a...

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  10. A thin liquid convex lens is formed in glass. Refractive index of liqu...

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  11. The focal lengths of a lens are in the ratio 8:3 when it is immersed i...

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  12. A double convex lens of focal length 30 cm is made of glass. When it ...

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  13. A pin is placed 10 cm in front of a convex lens of focal length 20 cm ...

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  14. A convex lens is in contact with concave lens. The magnitude of the ra...

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  15. A double convex lens is made of glass which has refractive inded 1.55 ...

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  16. The refractive index of a lens material is 1.5 and focal length f. Du...

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  17. A plano convex lens of refractive index 1.5 and radius of curvature 30...

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  18. A ray of light is incident at 50^(@) on the middle of one of two mirr...

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  19. A 2cm high object is placed on the principal axis of a concave mirror ...

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  20. A convace mirror forms a real image three times larger than the object...

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