MHT CET 2024 3rd May Evening Shift | Fluid Mechanics Question 54 | Physics

A steel ball of radius 6 mm has a terminal speed of $12 \mathrm{cms}^{-1}$ in a viscous liquid. What will be the terminal speed of a steel ball of radius 3 mm in the same liquid?

$12 \mathrm{~cms}^{-1}$

$9 \mathrm{~cms}^{-1}$

$6 \mathrm{~cms}^{-1}$

$3 \mathrm{~cms}^{-1}$

MHT CET 2024 3rd May Evening Shift

MCQ (Single Correct Answer)

-0

The pressure inside a soap bubble $A$ is 1.01 atmosphere and that in a soap bubble B is 1.02 atmosphere. The ratio of volume of bubble A to that of B is [Surrounding pressure $=1$ atmosphere]

$101:102$

$102: 101$

$8: 1$

$2: 1$

MHT CET 2024 3rd May Evening Shift

MCQ (Single Correct Answer)

-0

A liquid drop of density ' $\rho$ ' is floating half immersed in a liquid of density ' $d$ '. If ' $T$ ' is the surface tension then the diameter of the liquid drop is ( $\mathrm{g}=$ acceleration due to gravity)

$\left[\frac{6 \mathrm{~T}}{g(2 p-d)}\right]^{\frac{1}{2}}$

$\left[\frac{8 \mathrm{~T}}{3 \mathrm{~g}(2 \rho-\mathrm{d})}\right]^{\frac{1}{2}}$

$\left[\frac{12 \mathrm{~T}}{\mathrm{~g}(2 \rho-\mathrm{d})}\right]^{\frac{1}{2}}$

$\left[\frac{3 T}{g(2 p-d)}\right]^{\frac{1}{2}}$

MHT CET 2024 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

A gardening pipe having an internal radius ' $R$ ' is connected to a water sprinkler having ' $n$ ' holes each of radius ' $r$ '. The water in the pipe has a speed ' $v$ '. The speed of water leaving the sprinkler is

$\left(\frac{\mathrm{R}^2}{\mathrm{r}^2}\right) \mathrm{nV}$

$\frac{\mathrm{R}^2 \mathrm{v}}{\mathrm{nr}^2}$

$\left(\frac{n r^2}{R^2}\right) V$

$\left(\frac{\mathrm{nR}^2}{\mathrm{r}^2}\right) \mathrm{V}$

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