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Ray Optics

JEE Main level, numerical answer, medium

88 of 295

Question 88 of 295

As shown in the figure, a plane mirror is fixed at a height of $50cm$ from the bottom of tank containing water $\left(\mu =\dfrac{4}{3}\right)$ . The height of water in the tank is $8cm$ . A small bulb is placed at the bottom of the water tank. The distance of image of the bulb formed by mirror from the bottom of the tank is ______ $cm$ .

Show answer and solution

Answer: 98

The data given is

d=8cm \mu =\dfrac{4}{3}

Apparent depth is

{h}^{'}=\dfrac{d}{\mu }=\dfrac{8}{\dfrac{4}{3}}=6cm

Distance of object from mirror

=42+6=48m

Distance of image from bottom of tank

=48+50=98m

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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JEE Main Physics practice question on Ray Optics (Refraction of light from plane surface), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.