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  2. Two Convex Lenses Of Equal Focal Length F Are Placed In Contact The Resultant Focal Length Of The Combination Is______

Two Convex Lenses Of Equal Focal Length F Are Placed In Contact The Resultant Focal Length Of The Combination Is______

2 F

F/2

Zero

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Two Convex Lenses Of Equal Focal Length F Are Placed In Contact The Resultant Focal Length Of The Combination Is______

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