New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Properties of Matter question

2014 · Shift 0 · Q65

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Physics
Properties of Matter
2014 · Shift 0 · Q65

Properties of Matter question

2014 · Shift 0 · Q65

JEE MainPhysicsProperties of MatterMCQ+4 / −1

On heating water, bubbles being formed at the bottom of the vessel detach and rise. Take the bubbles to be spheres of radius

R

and making a circular contact of radius

r

with the bottom

R

and making a circular contact of radius

r

with the bottom of the vessel. If

r \lt \lt R

and the surface tension of water is

T,

value of

r

just before bubbles detach is: (density of water is

{\rho _w}

)

JEE Main 2014 (Offline) Physics - Properties of Matter Question 258 English

A
${R^2}\sqrt {{{{\rho _w}g} \over {3T}}}$
B
${R^2}\sqrt {{{{\rho _w}g} \over {6T}}}$
C
${R^2}\sqrt {{{{\rho _w}g} \over {T}}}$
D
${R^2}\sqrt {{{{2\rho _w}g} \over {3T}}}$

More from Properties of Matter

The pressure that has to be applied to the ends of a steel wire of length $10 c m$ to keep its length constant when its temperature is raised by $10 0^{\circ} C$ is: (For steel Young's modulus is $2 \times 1 0^{11} N m^{- 2}$ and…2014 · MCQ
A uniform cylinder of length $L$ and mass $M$ having cross-sectional area $A$ is suspended, with its length vertical, from a fixed point by a mass-less spring such that it is half submerged in a liquid of density $σ$ at equilibrium…2013 · MCQ
A thin liquid film formed between a U-shaped wire and a light slider supports a weight of $1.5 \times 1 0^{- 2} N$ (see figure). The length of the slider is $30 c m$ and its weight negligible. The surface tension of the liquid film is Includes diagram2012 · MCQ
Water is flowing continuously from a tap having an internal diameter $8 \times 1 0^{- 3} m .$ The water velocity as it leaves the tap is $0.4 m s^{- 1}$ . The diameter of the water stream at a distance $2 \times 1 0^{- 1} m$ …2011 · MCQ
Work done in increasing the size of a soap bubble from a radius of $3 c m$ to $5 c m$ is nearly (Surface tension of soap solution $= 0.03 N m^{- 1},$ 2011 · MCQ
A ball is made of a material of density $ρ$ where $ρ_{o i l} < ρ < ρ_{w a t er}$ with $ρ_{o i l}$ and $ρ_{w a t er}$ representing the densities of oil and water, respectively. The oil and water are immiscible. If…2010 · MCQ
Two wires are made of the same material and have the same volume. However wire $1$ has cross-sectional area $A$ and wire $2$ has cross-sectional area $3 A .$ If the length of wire $F,$ increases by $Δ x$ on applying force $F,$ how much…2009 · MCQ
A jar is filled with two non-mixing liquids $1$ and $2$ having densities $ρ_{1}$ and $ρ_{2}$ respectively. A solid ball, made of a material of density $ρ_{3}$ , is dropped in the jar. It comes to equilibrium in the position… Includes diagram2008 · MCQ