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     EduGorilla 
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    An object is placed in front of a convex mirror at a distance of 60m from its pole.  Object starts moving towards the mirror at 20 m/s. Find the average velocity of the image for a time interval of 2 sec if the focal length of the mirror is 20m.

    Options :-

    1. 20 m/s
    2. 10 m/s
    3. 30 m/s

    4. 2.5 m/s
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