Question

In a simple microscope, if the final image is located at 25 cm from the eye placed close to the lens, then magnifying power is

(a) \(\frac{25}{f}\)

(b) 1+ \(\frac{25}{f}\)

(c) \(\frac{f}{25}\)

(d) \(\frac{f}{25}\) + 1

Answer 1

 (b) 1+ \(\frac{25}{f}\)

When the final image is formed at the least distance of distinct vision in a simple microscope,

m =  1+ \(\frac{25}{f}\)