JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
In a microscope of tube length 10 cm two convex lenses are arranged with focal length of 2 cm and 5 cm . Total magnification obtained with this system for normal adjustment is \((5)^{ k }\). The value of k is _________
- A 2
- B 5
- C 3.5
- D 4
Answer & Solution
Correct Answer
(A) 2
Step-by-step Solution
Detailed explanation
\( f_{0}=2~cm \),\( fe=5~cm \) \( l=10 \),\( D=25~cm \) \( M=\frac{l}{f_{0}}.\frac{D}{f_{c}}=25 \)
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