JEE Mains · Physics · STD 12 - 9. Ray optics and optical instruments
A thin convex lens of focal length 5 cm and a thin concave lens of focal length 4 cm are combined together (without any gap) and this combination has magnification \( m_{1} \), when an object is placed 10 cm before the convex lens. Keeping the positions of convex lens and object undisturbed a gap of 1 cm is introduced between the lenses by moving the concave lens away, which lead to a change in magnification of total lens system to \( m_{2} \).
The value of \(\left|\frac{m_1}{m_2}\right|\) is __________ .
- A \( \frac{5}{6} \)
- B \( \frac{5}{27} \)
- C \( \frac{3}{2} \)
- D \( \frac{25}{27} \)
Answer & Solution
Correct Answer
(A) \( \frac{5}{6} \)
Step-by-step Solution
Detailed explanation
\( \frac{5}{6} \)
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