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an object 1cm high placed on the axis 15cm from a converging lens forms an…

an object 1cm high placed on the axis 15cm from a converging lens forms an image 30cm from the lens. The size of the image is
  • A.
    0.5cm
  • B.
    1.5cm
  • C.
    3cm
  • D.
    2.5m
  • E.
    2cm
Correct Answer: Option E
Explanation

(frac{text{image distance}}{text{object distance}}) = (frac{text{image height}}{text{object height}})
(frac{30}{15}) = (frac{text{image height}}{1})
image height = 2cm