What is the pressure on a swimmer $20 \,m$ below the surface of water ........ $atm$
What is the pressure on a swimmer $20 \,m$ below the surface of water ........ $atm$
- A
$1$
- B
$2$
- C
$4$
- D
$3$
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A barometer kept in an elevator accelerating downwards with acceleration $\mathrm{a}$. The most likely pressure inside the elevator is ?
A barometer kept in an elevator accelerating downwards with acceleration $\mathrm{a}$. The most likely pressure inside the elevator is ?
The height to which a cylindrical vessel be filled with a homogeneous liquid, to make the average force with which the liquid presses the side of the vessel equal to the force exerted by the liquid on the bottom of the vessel, is equal to
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- [KVPY 2017]
Figure shows a three arm tube in which a liquid is filled upto levels of height $l$. It is now rotated at an angular frequency $\omega$ about an axis passing through arm $B$. The angular frequency $\omega$ at which level of liquid in arm $B$ becomes zero.
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What are difficulties arised by using water in a barometer instead of mercury ?
What are difficulties arised by using water in a barometer instead of mercury ?