A man is looking at a small object placed at his near point. With… - Vidyadip

Question

A man is looking at a small object placed at his near point. Without altering the position of his eye or the object, he puts a simple microscope of magnifying power 5X before his eyes. The angular magnification achieved is:

5
2.5
1
0.2

✓

Answer

1

Explanation:

We have,
h = Object height
u = Object distance = 25cm
D = Near point = 25cm
Now,

$\text{m}=\frac{\frac{\text{h}}{\text{u}}}{\frac{\text{h}}{\text{D}}}$

$\Rightarrow\text{m}=\frac{\frac{\text{h}}{25}}{\frac{\text{h}}{25}}$

$\Rightarrow \text{m}=1$

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