COMEDK · Physics · 25. Ray Optics
A person has a normal near point \(25 \mathrm{~cm}\). What is the magnifying power of the simple microscope he used, if the focal length of the convex lens used is \(10 \mathrm{~cm}\) and the final image is formed at the least distance of distinct vision?
- A 25
- B 3.5
- C 7
- D 2.5
Answer & Solution
Correct Answer
(B) 3.5
Step-by-step Solution
Detailed explanation
The magnifying power \(M\) of a simple microscope when the final image is formed at the least distance of distinct vision \(D\) is given by the formula: \(M = 1 + \dfrac{D}{f}\) Given values are: Least distance of distinct vision \(D = 25 \text{ cm}\) Focal length of the convex…
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