Question

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

• A. Decreases
• B. Increases
• C. Does not change
• D. May decrease or increase

Answer 1

Answer: (A)

Decreases

Answer 2

For a microscope $L = v _ { o } + u _ { e }$

For a given microscope, with increase in L, u_e will increase and hence magnifying power (m) will decrease.