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A card sheet divided into squares each o...

A card sheet divided into squares each of size `1 mm^2` is being viewed at a distance of 9 cm through a magnifying glass (a converging lens of focal length 10 cm) held close to the eye. What should be the distance between the object in converging lens and the magnifying glass if the virtual image of each square in the figure is to have an area of `6.25 mm^2`. Would you be able to see the squares distinctly with your eyes very close to the magnifier ?

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. A card sheet divided into squares each of size 1 mm^2 is being viewed ...

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  2. To get five images of a single object, one should have two plane mirro...

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  3. A motor car is fitted with a convex driving mirror of focal length 20 ...

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  4. An experiment is performed to find the refractive index of glass using...

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  5. A transparent solid cylindrical rod has a refractive index of (2)/(sqr...

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  6. In an optics experiment, with the position of the object fixed, a stud...

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  7. A student measures the focal length of a convex lens by putting an obj...

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  8. Which of the following phenomenon is used in optical fiber?

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  9. The refractive index of water is 4//3.How much time will light take to...

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  10. A plano convex lens of refractive index 1.5 and radius of curvature 30...

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  11. Two lenses of powers+15D and -5D are in contact with each other. What ...

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  12. A convex lens of refractive index 1.5 has a focal length of 18 cm in a...

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  13. The refractive indices of the crown glass for blue and red light are 1...

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  14. The total magnification produced by a compound microscope is 20,while ...

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  15. Explain with reason,how the resolving power of an astronomical telesco...

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  16. An initially parallel cylindical beam travels in a medium of refractiv...

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  17. An initially parallel cylindical beam travels in a medium of refractiv...

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  18. An initially parallel cylindical beam travels in a medium of refractiv...

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  19. What is the main condition to produce interference of light?

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  20. In Young's double slit experiment what is the shape of interference fr...

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  21. In a Young's double slit experiment,the intensity at a point,where the...

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