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When a convex lens of 2.5 cm focal lengt...

When a convex lens of `2.5` cm focal length is used as a magnifying glass, normal eye can see an object clearly at a distance of 25 cm. The magnifying power of the instrument is

A

110

B

100

C

11

D

10

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TARGET PUBLICATION-OPTICS-EXERCISE
  1. Magnification of simple microscope when image is at infinity is given ...

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  2. The magnifying power of simple microscope is maximum when image is for...

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  3. When a convex lens of 2.5 cm focal length is used as a magnifying glas...

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  4. The compound microscope is used to see

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  5. Compound microscope is NOT used in

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  6. The focal length of the eye-piece of compound microscope is

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  7. In compound microscope, the intermediate image is

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  8. The length (L) of compound microscope when final image is formed at D....

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  9. When the final image is formed at infinity the magnifying power of com...

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  10. Which of the following is NOT an expression for magnifying power of co...

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  11. A compound microscope has a magnifying power of 35. Assume that the fi...

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  12. Relative difference of focal lengths of objective and eye lens in the ...

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  13. The object which are at large distance as compared to the focal lengt...

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  14. The number of lenses in a terrestrial telescope is

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  15. The objective of astronomical telescope has

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  16. In astronomcial telescop, which of the following statement is NOT appl...

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  17. The intermediate image fomred by the objective is

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  18. To see terrestiral objects, the final image must be

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  19. Whan a is introduced between objective and eye piece of telescope the...

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  20. When as tronomical telescope is adjusted for normal adjustment the fi...

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