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Ray Optics Test - 11

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Ray Optics Test - 11
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  • Question 1
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    For a prism of refractive index 1.732, the angle of minimum deviation is equal to the angle of prism. Then, the angle of the prism is
    Solution

  • Question 2
    4 / -1
    A convex lens is immersed in a liquid, whose refractive index is equal to the refractive index of the material of the lens. Then its focal length will
  • Question 3
    4 / -1
    When the light enters from air to glass, for which colour the angle of deviation is maximum?
  • Question 4
    4 / -1
    A thin lens of glass (μ = 1.5) of focal length +10 cm is immersed in water (μ =1.33). The new focal length is
  • Question 5
    4 / -1
    The refractive index of a material of a planoconcave lens is 5/3, the radius of curvature is 03 m. The focal length of the lens in air is
  • Question 6
    4 / -1
    A convex and a concave lens separated by distance d are then put in contact. The focal length of the combination
  • Question 7
    4 / -1
    Two lenses of power –15 D and + 5 D are in contact with each other. The focal length of the combination is
  • Question 8
    4 / -1
    Two thin equiconvex lenses each of focal length 0.2 m are placed coaxially with their optic centres 0.5 m apart. Then, the focal length of the combination is
    Solution

  • Question 9
    4 / -1
    Two thin lenses of focal length 20 cm and 25 cm are in contact. The effective power of the combination is
    Solution

  • Question 10
    4 / -1
    The plano-convex lens of focal length 20 cm and 30 cm are placed together to form a double convex lens. The final focal length will be
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