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For a plano convex lens, the radius of c...

For a plano convex lens, the radius of curvature of convex surface is 10 cm and the focal length is 30 cm. The refractive index of the material of the lens is

A

1.5

B

1.66

C

1.33

D

2.5

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-RAY OPTICS AND OPTICAL INSTRUMENTS-EXERCISE
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  3. For a plano convex lens, the radius of curvature of convex surface is ...

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  4. A lens made of material of Refractive index mu(2) is surrounded by a m...

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  5. A light ray is incident normally on one of the refracting faces of a p...

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  6. If a light ray incidents normally on one of the faces of the prism of ...

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  8. A prism of refractive index sqrt2 has refractive angle 60^@. In the or...

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  9. The least angle of deviation for a glass prism is equal to its refract...

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  10. A light ray of angles of incidence 40^(@) emerged from the prism in mi...

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  11. The angle of minimum deviation for a 75^(@) prism of dense glass is fo...

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  12. Suppose a small angled prism of 6^(@) deviates a ray through 3^(@), th...

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  13. For a given prism thetaanddelta are angular dispersion and deviation. ...

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  14. If a is the size of scatterer and lamda is the wavelength of light the...

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  15. Which of the following colour is scattered most is atmosphere?

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  17. Lateral magnification of objective of compound microscope is 100 and a...

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  18. Focal length of objective eye piece and inverting lens of a terrestria...

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  19. Advantages of cassegrain telescope is/are

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  20. A simple telescope consisting of an objective of focal length 60 cm an...

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