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Ray Optics Test...

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  • Question 1
    4 / -1

    In a compound microscope, if the objective produces an image I0 and the eye piece produces an image Ie then

  • Question 2
    4 / -1

    The head lights of a jeep are 1.2 m apart. If the pupil of the eye of an observer has a diameter of 2 mm and light of wavelength 5896 Å is used, what should be the maximum distance of the jeep from the observer if the two head lights are just separated

  • Question 3
    4 / -1

    An electron microscope is superior to an optical microscope in

  • Question 4
    4 / -1

    The magnifying power of a microscope with an objective of 5 mm focal length is 400. The length of its tube is 20 cm. Then the focal length of the eye-piece is

  • Question 5
    4 / -1

    The maximum magnification that can be obtained with a convex lens of focal length 2.5 cm is (the least distance of distinct vision is 25 cm)

  • Question 6
    4 / -1

    When the object is self-luminous, the resolving power of a microscope is given by the expression

  • Question 7
    4 / -1

    The power of two convex lenses A and B are 8 dioptres and 4 dioptres respectively. If they are to be used as a simple microscope, the magnification of

  • Question 8
    4 / -1

    A compound microscope has an eye piece of focal length 10 cm and an objective of focal length 4 cm. Calculate the magnification, if an object is kept at a distance of 5 cm from the objective so that final image is formed at the least distance vision (20 cm)

  • Question 9
    4 / -1

    The working of which of the following is similar to that of a slide projector?

  • Question 10
    4 / -1

    In order to increase the magnifying power of acompound microscope

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