Question

8. A candle placed 25 cm from a lems, forms
an image on a screen 75 cm on the other
end of the lens. The focal length and type
of the lens should be
a) 18.75 cm. convex lens
b) 18.75 cm, concave lens
c) 20.25 cm, convex lens
d) 20.25 cm, concave lens​

Answer 1

Explanation:

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