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The two surfaces of a convex lens are of...

The two surfaces of a convex lens are of same radius of curvature.It is cut into two equaol parts by a plane perpendicular to its principal axis.If the power of the lens was originally D,then the power of the either porition will be

A

`D//4`

B

`D//2`

C

`D`

D

2D

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A lens behaves as a converging lens in air and diverging lens in wate...

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  2. The two surfaces of a convex lens are of same radius of curvature.It i...

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  3. The two surfaces of a convex lens are of same radius of curvature.It i...

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  4. A convex lens is placed in contact with a mirror as shown in figure. I...

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  5. For a given distance between an object and an image screen,magnificati...

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  6. An object is placed at a distance of f//2 from a convex lens .The imag...

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  7. A camera is focussed to take a cose up picture of an insect at a dista...

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  8. The graph drawn with object distance along abbscissa and image distanc...

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  9. Two plane -convex lenses,each having focal length of 0.4 m,are pressed...

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  10. A film projector magnifies a 100 cm^2 film strip on a screen.If the li...

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  11. In order to include the effect of thickness t of the lens,following f...

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  12. A beam of light is incident on a convex lens parallel to its principal...

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  13. The plane face of the plano-convex lens of focal length 20 cm is silve...

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  14. A lens having focal length f and aperture of diameter d//2 in the cent...

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  15. A beam of parallel rays is brought to focus by a plano-convex lens.A ...

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  16. Large aperture of lens results in

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  17. The spherical abberation in a lens may be inimised by designing of th...

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  18. A glass prism placed in a homogeneous transparent medium will deivatie...

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  19. Angle of minimum deviation for a prism of refractive index 1.5 is equa...

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  20. Yellow light is refracted through a prism producing minimum deviation ...

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