Question

An object is placed at a distance of 75 cm from a screen.Two positions of a covex lens of focal length 12cm placed so as to obtain a real images are

Answer 1

Answer:

b/w 2F1and F1

Explanation:

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Answer 2

Answer:

after finding∆x

X2-X1=∆x

in options subract those positions if u get 45

that is correct answer