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A concave mirror,a screen and object are arranged such that the height of image is doubled that of the object.then the screen and object movies to get a triple magnified this case screen is moved by25cm.find the focal length of mirror?

Asked by venkat 26th July 2017, 11:15 AM
Answered by Expert

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Answered by Expert 29th July 2017, 12:42 PM
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