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Optical Instrum...

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  • Question 1
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    Near and far points of human eye are

  • Question 2
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    A defective eye cannot see close objects clearly because their image is formed

  • Question 3
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    Retina of eye acts like ….. of camera

  • Question 4
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    A person who can see things most clearly at a distance of 10 cm. Requires spectacles to enable him to see clearly things at a distance of 30 cm. What should be the focal length of the spectacles

  • Question 5
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    An astronaut is looking  down on earth's surface from a space shuttle at an altitude of 400 km Assuming that the astronaut's pupil diameter is 5 mm and the wavelength of visible light is 500 nm The astronaut will be able to resolve linear object of the size of about

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