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JEE Main 7 April 2025, Shift 1, Physics Q50

Question 50 of 75 in this shift, Physics question 25 of 25, Section B.

A container contains a liquid with refractive index of 1.2 up to a height of 60 cm and another liquid having refractive index 1.6 is added to height H above first liquid. If viewed from above, the apparent shift in the position of bottom of container is 40 cm. The value of H is ________cm. (Consider liquids are immisible)

Official answer

NTA final key.

Chapter: Ray Optics and Optical Instruments
Topic: Refraction and Snell's Law
Idea tested: Apparent Depth of Immiscible Liquids

Same idea in other shifts

Asked 4× in all

27 Jan 2024, Shift 1 · Q59Two immiscible liquids of refractive indices $\frac{8}{5}$ and $\frac{3}{2}$ respectively are put in a beaker as shown in the figure. The…EasyNumerical valueHas a figure
13 Apr 2023, Shift 1 · Q44A vessel of depth 'd' is half filled with oil of refractive index $n_1$ and the other half is filled with water of refractive index $n_2$ .…EasySingle correct
9 Jan 2020, Shift 1 · Q15A vessel of depth 2h is half filled with a liquid of refractive index $2\sqrt{2}$ and the upper half with another liquid of refractive…EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.