TS EAMCET · Physics · Ray Optics
A convex lens of radii of curvature 6 cm and 12 cm is immersed in a liquid of refractive index 1.3. If the refractive index of the material of the lens is 1.5, then the focal length of the lens when immersed in the liquid is
- A 39 cm
- B 13 cm
- C 26 cm
- D 52 cm
Answer & Solution
Correct Answer
(C) 26 cm
Step-by-step Solution
Detailed explanation
\( \frac{1}{f_l} = \left( \frac{n_g}{n_l} - 1 \right) \left( \frac{1}{R_1} - \frac{1}{R_2} \right) \) \( \frac{1}{f_l} = \left( \frac{1.5}{1.3} - 1 \right) \left( \frac{1}{6 \text{ cm}} - \frac{1}{-12 \text{ cm}} \right) \)…
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