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The focal length of a lens depends upon...

The focal length of a lens depends upon

A

radii of curvatures of two surface only.

B

refractive index of the lens material only.

C

length of the lens.

D

both radii of curvatures of two surfaces and refractive index of the lens material.

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TARGET PUBLICATION-OPTICS-EXERCISE
  1. The reciprocalof ((mu(2)-mu(1))/(R)) gives the value of

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  2. A point object is situated in air at a distance of 20 cm from a convex...

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  3. The focal length of a lens depends upon

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  4. The lense formula with normal notation is given by

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  5. The lens maker's equation is given by

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  6. For convex lens, the radii of curvatures of the first and second surfa...

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  7. A beam of light is incident on a convex lens nparallel to its principa...

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  8. An object is kept at 0.2 m from a convex lens of focal length of 0.15 ...

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  9. A convex lens of focal length f produces a real image 3 times as that ...

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  10. when an object is kept in frnt of a convex lens the distance between i...

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  11. What is the focal length of double convex lens for which radius of cur...

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  12. A plano-convex lens has focal length of 20 cm. the radius of its sph...

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  13. The focal length of concave lens, accroding to new Cartesiaon sign co...

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  14. A diverging lens may NOT have

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  15. A concave lens of focal length f produces an image (1)/(4) of the size...

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  16. A concave lens has radioi of curvatures of 20 cm and 30 cm respective...

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  17. The radius of curvature of each surface of a biconcave lens made up of...

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  18. A single lens, which will form the image of a given object at the same...

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  19. Two thin lenses may be combined so as to

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  20. Two thin lenses with focal lenghts f(1) and f(2) make a lens of focal ...

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