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Question

The length of the tube of a microscope is 10 cm.The lengths of the objective and eye lenses are 0.5 cm and 1 cm respectively. The magnifying power of the microscope when the images at far point is about
  1. 5
  2. 23
  3. 166
  4. 500

A
166
B
5
C
23
D
500
Solution
Verified by Toppr

Given,
Length of tube microscope, L=10 cm
Focal length of objective lens, fo=0.5 cm
Focal length of eye lens, fe=1 cm

The image is formed at the far point. Hence, using the formula for normal adjustment, we have
m=vouoDfe

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