Question

The magnifying power of the Simple Microscope can be increased by :

• A. Using smaller aperture of lens
• B. Using lens of smaller focal length
• C. Using bigger aperture of lens
• D. Using lens of bigger focal length

Answer 1

The correct option is B Using lens of smaller focal length

• Simple microscope is nothing but a magnifying glass.

• We have the formula for power of lens P = 1/f

• From this we can observe that magnifying power is inversely proportional to the focal length

• Therefore, the smaller the focal length, the higher the magnifying power.

• Therefore the correct answer is B