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Simple microscope consists of...

Simple microscope consists of

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Simple microscope is used for watch repairs.

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A simple microscope is rated 5 X for a normal relaxed eye. What Will be its magnifying power for a relaxed farsighted eye whose near point is 40 cm?

The magnifying power of a converging lens used as a simple microscope is (1+D/f) . A compound microscope is a combination of two such converging lenses. Why don't we have magnifying power (1+D/f_0)(1+D/f_e) . In other words, why can the objective not be treated as a simple microscope but the eyepiece can?

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In a simple microscope to obtain higher magnification, the focal length of convex lens should be ________-

CHETAN PUBLICATION-LENSES-Choose and write the correct option:
  1. What is the distance of distinct vision?

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  2. The power of a convex lens of focal length 50 cm is …………….

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  3. The focal length of a concave lens with power -4D is ……………….

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  4. If the incident ray passes through focus, then the reflected ray is ……...

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  5. The image is formed on the ………..of the human eye.

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  6. If an object is placed between F(1)" and " 2F(1) of a convex lens, the...

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  7. When a person is myopia, he/she can clearly see .

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  8. Hypermeteropia is corrected by lens.

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  9. Convex lens of power +5" D " and concave lens with power -3" D "are pl...

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  10. Simple microscope consists of

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  11. The perception of dim light is concerned with …………….. cells.

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  12. Impression of an image lasts on the retina for1/10 the of a second.

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  13. The second focal point is located at ………………… of a human eye.

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  14. For a Convex lens, if the incident ray is parallel to the principle ax...

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  15. Inside water, an air bubble behaves ……………….

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  16. To obtain an image of the same size as the object with the help of a c...

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  17. At what distance should a watchmaker hold his lens from the watch?

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  18. When we enter a dark room, pupil of our eye ………………. .

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