MCQ
When the length of a microscope tube increases, its magnifying power
- ✓(a) Decreases
- B(b) Increases
- C(c) Does not change
- D(d) May decrease or increase
✓
Answer
Correct option: A.
(a) Decreases
(a) For a microscope $|m|=\frac{v_o}{u_o} \times \frac{D}{u_e}$ and $L=v_o+u_e$For a given microscope, with increase in $L, u$ will increase and hence magnifying power $(m)$ will decrease.
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