By placing a comvex lens of focal length...

By placing a comvex lens of focal length equal to 15.0 cm between an object and a screen separated by a distance of 75.0 cm, the sizes of the images obtained are 6.0 cm and `(2)/(3)cm`. The size of the object must be

2.0 cm

4.0 cm

3.0 cm

1.5 cm

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