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Ray Optics Test...

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  • Question 1
    4 / -1

    A concave mirror of focal length f (in air) is immersed in water (µ = 4/3). The focal length of the mirror in water will be

  • Question 2
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    A boy stands straight infront of a mirror at a distance of 30 cm away from it. He sees his erect image whose height is 1/5th of his real height. The mirror he is using is

  • Question 3
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    What will be the height of image when an object of 2 mm is placed on the axis of a convex mirror at a distance 20 cm of radius of curvature 40 cm?

  • Question 4
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    Which one of the following statements is true?

  • Question 5
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    Convergence of concave mirror can be decreased by dipping in

  • Question 6
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    A virtual image larger than the object can be obtained by

  • Question 7
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    Radius of curvature of concave mirror is 40cm and the size of image is twice as that of object, then the object distance is

  • Question 8
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    If an object is placed 10 cm infront of a concave mirror of focal length 20 cm, the image will be

  • Question 9
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    A convex mirror has a focal length f. A real object is placed at a distance f in front of it from the pole produces an image at

  • Question 10
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    An object 1cm tall is placed 4 cm infront of a mirror. In order to produce an upright image of 3 cm height one needs a

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