A convex lens of focal length f produces a real image of size m-times the size of the object. Then the object distance is:(A) \((\frac{m+1}{m})f\)(B) (m +1)f(C) \(\frac{m+1}{f}\)(D) \(\frac{fm}{(m+1)}\)

A convex lens of focal length f produces a real image of size m-times

1.	A convex lens of focal length f produces a real image of size m-times the size of the object. Then the object distance is:(A) \((\frac{m+1}{m})f\)(B) (m +1)f(C) \(\frac{m+1}{f}\)(D) \(\frac{fm}{(m+1)}\)
Answer» Correct option is (A) \((\frac{m+1}{m})f\)

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A convex lens of focal length f produces a real image of size m-times the size of the object. Then the object distance is:(A) \((\frac{m+1}{m})f\)(B) (m +1)f(C) \(\frac{m+1}{f}\)(D) \(\frac{fm}{(m+1)}\)

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