MHT CET 2026 19th April Evening Shift | Fluid Mechanics Question 7 | Physics

A metal wire of length 'L' and density 'd' floats horizontally on the free surface of water. The maximum radius of the wire does not sink in water is
[ $T$ = surface tension of water , $g$ = gravitational acceleration]

$\sqrt{\dfrac{2dg}{\pi T}}$

$\sqrt{\dfrac{2T}{\pi dg}}$

$\sqrt{\dfrac{\pi dg}{2T}}$

$\sqrt{\dfrac{T}{\pi dg}}$

MHT CET 2026 19th April Evening Shift

MCQ (Single Correct Answer)

-0

The energy needed for breaking a liquid drop of radius 'R' into 'n' droplets each of radius 'r' is
[ $T$ = surface tension of the liquid]

$4\pi T R^2 \left[\dfrac{R}{r} - 1\right]$

$4\pi T R \left[\dfrac{R}{r} - 1\right]$

$4\pi T \left[\dfrac{R^2}{r^2} - 1\right]$

$4\pi T \left[1 + \dfrac{R^3}{r}\right]$

MHT CET 2026 19th April Evening Shift

MCQ (Single Correct Answer)

-0

In most liquids, with rise in temperature surface tension of liquid

decreases

increases

remains unchanged

first decreases and then increases

MHT CET 2026 19th April Morning Shift

MCQ (Single Correct Answer)

-0

One large soap bubble of diameter 'D' breaks into $64$ bubbles having surface tension 'T'. The change in surface energy is

$2\pi TD^2$

$4\pi TD^2$

$6\pi TD^2$

$8\pi TD^2$

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