Question: QUESTION 3 7 An object is placed 3 0 cm from a convex lens. An image is formed on a screen 2 0 cm on

QUESTION 37
An object is placed 30 cm from a convex lens. An image is formed on a screen 20 cm on the other side of the lens. What is the focal length of the lens?
24 cm
12 cm
18 cm
6 cm
QUESTION 3 7 An object is placed 3 0 cm from a

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