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Ray Optics Test...

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  • Question 1
    4 / -1

    A biconvex lens has a radius of curvature of magnitude 20 cm. Which one of the following options describe best the image formed of an object of height 2 cm placed 30 cm from the lens

  • Question 2
    4 / -1

    When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index

  • Question 3
    4 / -1

    Which source is associated with a line emission spectrum

  • Question 4
    4 / -1

    When white light passes through a glass prism, one gets spectrum on the other side of the prism. In the emergent beam, the ray which is deviating least is
    or
    Deviation by a prism is lowest for

  • Question 5
    4 / -1

    We use flint glass prism to disperse polychromatic light because light of different colours

  • Question 6
    4 / -1

    A prism (µ = 1.5) has the refracting angle of 30°. The deviation of a monochromatic ray incident normally on its one surface will be (sin 48° 36\' = 0.75)

  • Question 7
    4 / -1

    Fraunhoffer lines are obtained in

  • Question 8
    4 / -1

    A spectrum is formed by a prism of dispersive power \'ω\'. If the angle of deviation is \'δ\', then the angular dispersion is

  • Question 9
    4 / -1

    Light from sodium lamp is passed through cold sodium vapours, the spectrum of transmitted light consists of

  • Question 10
    4 / -1

    Angle of minimum deviation for a prism of refractive index 1.5 is equal to the angle of prism. The angle of prism is (cos 41° = 0.75)

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