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A concave lens of focal length 20cm form an image 1/2 the size of the object. The ...

A concave lens of focal length 20cm form an image 1/2 the size of the object. The object distance is

A. 100cm
B. \( \frac{100}{q} \)
C. 60cm
D. \( \frac{60}{7} \)
E. None of the above




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