A person with a normal near point `(25 cm)` using a compound microscope with an objective of focal length `8.0 mm` and eye piece of focal length `2.5 cm` can bring an object placed `9.0 cm` from the objective in sharp focus. What is the separation between the two lenses ? Calculate the magnifying power of the microscope ?
Text Solution
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To solve the problem step by step, we will follow the physics principles related to lenses and magnification.
### Given Data:
- Near point of the person, \( D = 25 \, \text{cm} \)
- Focal length of the objective lens, \( f_o = 8 \, \text{mm} = 0.8 \, \text{cm} \)
- Focal length of the eyepiece lens, \( f_e = 2.5 \, \text{cm} \)
- Object distance from the objective lens, \( u_o = -9 \, \text{cm} \) (negative as per sign convention)
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