CUET · PHYSICS · PYQ PAPER 2023
An angular magnification of 30 X is desired using an objective lens of focal length 1.25 cm and an eyepiece of focal length 5 cm. What should be the separation between objective and eyepiece when the final image is formed at the near point ?
- A 11.67 cm
- B 8.5 cm
- C 12.25 cm
- D 7.5 cm
Answer & Solution
Correct Answer
(A) 11.67 cm
Step-by-step Solution
Detailed explanation
\( M_e = 1 + \frac{D}{f_e} = 1 + \frac{25 \text{ cm}}{5 \text{ cm}} = 6 \) \( M_o = \frac{M}{M_e} = \frac{30}{6} = 5 \)…
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