Shown in the figure here is a convergent lens placed inside a cell filled with a liquid…
Physics · JEE Advanced · NTA Exams — Optics
Shown in the figure here is a convergent lens placed inside a cell filled with a liquid. The lens has focal length +20 cm when in air and its material has refractive index 1.50 . If the liquid has refractive index 1.60, the focal length of the system is
- + 80 cm
- – 80 cm
- – 24 cm
- – 100 cm
Answer
(D) – 100 cm
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