Question

The length of the tube of a microscope is 10 cm. The focal lengths of the objective and eye lenses are 0.5 cm and 1.0 cm. The magnifying power of the microscope is about

• A. 5
• B. 23
• C. 166
• D. 500

Answer 1

Answer: (D)

500

Answer 2

$m \simeq \frac { L D } { f _ { o } f _ { e } }$ $\Rightarrow m = \frac { 10 \times 25 } { 0.5 \times 1 } = 500$.