Question:
The magnifying power of a simple microscope increases when:
The magnifying power of a simple microscope increases when:
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Remember:
\[
\text{Smaller focal length} \Rightarrow \text{Greater magnification}
\]
Updated On: May 27, 2026
- Focal length increases
- Focal length decreases
- Aperture decreases
- Radius of lens increases
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The Correct Option is B
Solution and Explanation
Step 1: Recall magnifying power formula. \[ M=1+\frac{D}{f} \] where: \[ D=\text{least distance of distinct vision} \]
Step 2: Analyze relation. \[ M \propto \frac{1}{f} \] Hence smaller focal length gives larger magnifying power. Therefore: \[ \boxed{\text{Focal length decreases}} \]
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