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Ray Optics Test...

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  • Question 1
    4 / -1

    If the focal length of the objective lens is increased then

  • Question 2
    4 / -1

    At Kavalur in India, the astronomers using a telescope whose objective had a diameter of one metre started using a telescope of diameter 2.54 m. This resulted in

  • Question 3
    4 / -1

    The focal lengths of the objective and the eye-piece of a compound microscope are 2.0 cm and 3.0 cm respectively. The distance between the objective and the eye-piece is 15.0 cm. The final image formed by theeye-piece is at infinity. The two lenses are thin. The distances in cm of the object and the image produced by the objective measured from the objective lens are respectively

  • Question 4
    4 / -1

    Resolving power of a microscope depends upon

  • Question 5
    4 / -1

    The objective lens of a compound microscope produces magnification of 10. In order to get an overall magnification of 100 when image is formed at 25 cm from the eye, the focal length of the eye lens should be

  • Question 6
    4 / -1

    A person using a lens as a simple microscope sees an

  • Question 7
    4 / -1

    Least distance of distinct vision is 25 cm. Magnifying power of simple microscope of focal length 5 cm is

  • Question 8
    4 / -1

    Resolving power of a microscope depends upon

  • Question 9
    4 / -1

    In a compound microscope cross-wires are fixed at thepoint

  • Question 10
    4 / -1

    In a compound microscope, the intermediate image is

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