A compound microscope has a magnifying p...

A compound microscope has a magnifying power of 100 when the image is formed at infinity. The objective has a focal length of 0.5 cm and the tube length is 6.5 cm. What is the focal length of the eyepiece.

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The correct Answer is:

B, C

m=100, `v_e=oo, f_0=0.5cm
Tube length k=6.5cm
`u_e=f_e`
for given case `1w=1/0.5xx25/f_e`
`rarr f_e=2cm`

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