An object is kept at a distance of 10 cm from a convex lens. Calculate the image distance if the focal length of the lens is 2 cm.
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Answer:
2.5 cm
Explanation:
1/f = 1/u +1/v
1/2= 1/10+1/v
1/v= 1/2-1/10
= 4/10
= 2/5
=> v= 5/2 =2.5 cm from the lens
=> image formed between focus and
centre of curvature
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