An object has height 3cm. Its erect image is obtained when placed in front of a convex lens. If its magnification is 2, what is the height of the image?
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Explanation:
Object height (h) = 3cm
Magnificaton(m) = 2
We know that,
⇒ m = h/h₂
⇒ 2 = 3/h₂
∴h₂ = 3/2
= 1.5 cm
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