suggest a method to find approximate focal length of a concave mirror . plz plz solve this
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Use this formula to find the focal length.
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Drag the screen till you get a sharp image of the object.
Measure the distance between the concave mirror and the screen with given metre scale. This measured distance is focal length of concave mirror.
Measure the distance between the concave mirror and the screen with given metre scale. This measured distance is focal length of concave mirror.
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