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?

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Solution

The child has D = 10 cm and f = 10 cm. The maximum angular magnification is obtained when the image is formed at near point.

$m = 1 + \frac{D}{f} = 1 + \frac{10}{10}$

= 1 + 1 = 2

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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?

The child has D = 10 cm and f = 10 cm. The maximum angular magnification is obtained when the image is formed at near point. m=1+Df=1+1010 = 1 + 1 = 2

The child has D = 10 cm and f = 10 cm. The maximum angular magnification is obtained when the image is formed at near point.

$m = 1 + \frac{D}{f} = 1 + \frac{10}{10}$

= 1 + 1 = 2