Ray Optics and Optical Instruments — Physics STD 12 Science — Question
Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsRay Optics and Optical Instruments1 Mark
Question
To increase the angular magnification of a simple microscope, one should increase:
✓
Answer
The power of the lens.
Explanation:
For a simple microscope in normal adjustment, the object is placed at a distance equal to f (the focal length) from the lens, And the angular magnification is given by the relation
$\text{m}=\frac{\text{D}}{\text{f}}$
for $\text{u}<\text{f},\text{m}=\frac{\text{D}}{\text{f}}+1$
power of lens $=\frac{1}{\text{f}}$
Angular magnification depends on power.
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