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A child has near point at 10 cm. What is...

A child has near point at `10 cm`. What is the maximum angular magnification the child can have with a convex lens of focal length `10 cm` ?

Text Solution

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For maximum angular magnification,
`v = -d = - 10 cm`
From `(1)/(v) - (1)/(u) = (1)/(f), (1)/(u) = (1)/(v) - (1)/(f) = -(1)/(10) - (1)/(10) = -(1)/(5)`
Maximum angular magnification,
`m = (v)/(u) = -(10)/(-5) = 2`
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