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A convex lens causes a ray of light to c...

A convex lens causes a ray of light to converge, for this reason it may be used to correct

A

Near sightedness

B

Far sightedness

C

Astigmatism

D

Both (2) & (3)

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The correct Answer is:
B
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A convex lens converges the rays of light falling on it.

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The convex lens is used in-

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a) Draw a diagram to show how a converging lens focusses parallel rays of light. b) How would you after alter the above diagram to show how a converging lens can produce a beam of parallel rays of light.

AAKASH INSTITUTE-Mock Test 36-Example
  1. Two thin lenses of focal lengths 20 cm and 25 cm are placed in a conta...

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  2. In case of myopia

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  3. A convex lens causes a ray of light to converge, for this reason it ma...

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  4. A person cannot see objects clearly beyond 125 cm. The power of the le...

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  5. In a compound microscope, the intermediate image is

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  6. If fo and fe are the focal lengths of the objective lens and eye-piece...

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  7. In a laboratory five convex tenses L1, L2, L3, L4 and L5 of focal leng...

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  8. The minimum magnification produced by simple microscope of focal lengt...

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  9. The difference between maximum magnification and minimum magnification...

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  10. A person cannot see objects clearly that are closer that 1 m and farth...

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  11. Magnifying power of an astronomical telescope is M.P. If the focal len...

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  12. A far sighted person cannot see object clearly al a distance less than...

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  13. Select the correct option

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  14. In order to increase the magnifying power of a telescope

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  15. Identify the correct description of the below figure

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  16. The shape of reflected wavefronts in case of reflection of plane wave ...

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  17. For point source, the wavefront is

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  18. The value of angle r in figure below is (##AAKMCP36NEETPHYE36017Q01.p...

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  19. Huygen's wave theory explain the phenomena of

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  20. Huygen's principle allows us to determine,

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