Multiple choice

When the length of a microscope tube increases, its magnifying power

  1. decreases

  2. increases

  3. does not change

  4. None of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A compound microscope's magnifying power increases with tube length because the distance between the objective and eyepiece affects how much the intermediate image is magnified. Longer tubes allow greater separation between the focal points, enhancing overall magnification.