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MHT CET (PCB) 2024 22th April Morning Shift
MCQ (Single Correct Answer)
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A light metal disc of radius ' $r$ ' floats on water surface and bends the surface downwards along the perimeter making an angle ' $\theta$ ' with the vertical edge of the disc. If the weight of water displaced by the disc is ' W ', the weight of the metal disc is [ $\mathrm{T}=$ surface tension of water]

A
$\quad \mathrm{W}-2 \pi \mathrm{r} \mathrm{T} \cos \theta$
B
$2 \pi r \mathrm{~T}+\mathrm{W}$
C
$2 \pi \mathrm{r} \mathrm{T} \cos \theta+\mathrm{W}$
D
$2 \pi \mathrm{rT} \cos \theta-\mathrm{W}$
MHT CET (Biology) Subjects
EXAM MAP