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MHT CET 2024 (4 May, Shift 2) · Refraction, Glass Slab & Apparent Depth

Refraction, Glass Slab & Apparent Depth question from MHT CET 2024 (4 May, Shift 2)

Q20MHT CET 2024 · 4 MAY · SHIFT 2Easy

Refraction, Glass Slab & Apparent Depth

Some water is filled in a container of height 30 cm. If it is to appear half filled to the observer when viewed from the top of the container, the height up to which water should be filled in it, is [Refractive index of water $= \frac{4}{3}$ ]

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Answer: (c)

Water of height $h$ appears $\frac{h}{\mu} = \frac{3h}{4}$ deep.
Key's condition: apparent depth = half the container height, $\frac{3h}{4} = 15$
$h = 20\text{ cm}$
So the answer is (c) 20 cm.

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