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In all optical instruments, we use....

In all optical instruments, we use.

A

(a) ray optics

B

wave optics

C

( c) physical optics

D

(d) none of these

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The correct Answer is:
A
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PRADEEP-OPTICS-Exercise
  1. The refractive index of a prism with apex angle A is cot A//2. Prove t...

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  2. The refracting angle of a glass prism is 60^@ and mu of its material i...

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  3. In all optical instruments, we use.

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  4. For a normal eye, distance of near point from the eye is.

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  5. The lens used for correcting myopia is.

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  6. The correct formula for magnifying powerof a simple microscope is.

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  7. In a compound microscope, the distance between objective lens and eye ...

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  8. For a total magnification of 175 from a compound microscope, the magni...

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  9. The final image in a astronomical telescope (w.r.t. object) is.

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  10. A telescope uses an objective lens of focal length f0 and an eye lens ...

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  11. What focal length should the reading spectacles have for a person whos...

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  12. An astronomical telescope has a magnifying power of 10. In normal adju...

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  13. A myopia eye can see clearly………but the………cannot be seen distinctly.

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  14. A myopia eye can see clearly………but the………cannot be seen distinctly.

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  15. Presbyopia is also called………. .

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  16. For a normal eye, the least distance of distinct vision is……..and far ...

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  17. Magnifying power of a simple microscope is defined as the………of angles…...

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  18. In a compound microscope, the objective lens and……..are………. .

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  19. Focussing in a compound microscope is carried out by changing the……..f...

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  20. In an astronomical telescope, the distance between……….and…….can be var...

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