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Ray Optics and ...

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  • Question 1
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    The radius of curvature for a convex lens is 40 cm, for each surface. Its refractive index is 1.5. The focal length will be  

     

  • Question 2
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    A concave mirror gives an image three times as large as the object placed at a distance of 20 cm from it. For the image to be real, the focal length should be

     

  • Question 3
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    If an object is 30 cm away from a concave mirror of focal length 15 cm, the image will be

     

  • Question 4
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    A concave mirror cannot form

     

  • Question 5
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    The largest distance of the image of a real object from a convex mirror of focal length 20 cm can be

     

  • Question 6
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    A particle is moving towards a fixed spherical mirror. The image :

     

  • Question 7
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    A straight line joining the object point and image point is always perpendicular to the mirror

     

  • Question 8
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    The focal length of spherical mirror is

     

  • Question 9
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    A virtual image, larger than the object can be produced by

     

  • Question 10
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    In case of concave mirror, the minimum distance between a real object and its real image is :

     

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