TS EAMCET · Physics · Mechanical Properties of Fluids
A vessel having small hole in the bottom has to hold water without leakage, if water is poured to a height of 7 \(\mathrm{cm}\). Then the radius of the hole is [surface tension of water is \(0.07 \mathrm{Nm}^{-1}\), angle of contact is \(0^{\circ}\) and \(\mathrm{g}=10 \mathrm{~ms}^{-2}\) ]
- A \(1 \mathrm{~mm}\)
- B \(2 \mathrm{~mm}\)
- C \(4 \mathrm{~mm}\)
- D \(0.2 \mathrm{~mm}\)
Answer & Solution
Correct Answer
(D) \(0.2 \mathrm{~mm}\)
Step-by-step Solution
Detailed explanation
Height of water, \(\mathrm{h}=7 \mathrm{~cm}=0.07 \mathrm{~m}\) Surface tension of water, \(T=0.07 \mathrm{~N} / \mathrm{m}\) \[ \mathrm{T}=\frac{\mathrm{rh} \rho \mathrm{g}}{2} \] The radius of hole, \(r=\frac{2 \tau}{h \rho g}\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- The speed of a transverse wave in a stretched string ' \(A\) ' is ' \(v\) '. Another string ' \(B\) ' of same length and same radius is subjected to same tension. If the density of the material of the string ' \(B\) ' is \(2 \%\) more than that of ' \(A\) ', then the speed of the transverse wave in string ' \(B\) ' isTS EAMCET 2024 Hard
- Figure shows a ray of light entering and passing through a dense glass slab and emerging from the other side. If the angle \(i=60^{\circ}\), slab thickness \(b=0.04 \mathrm{~m}\) and the refractive index of glass \(=\sqrt{3}\), the parallel shift \(d\) between the emerging and entering rays in \(\mathrm{mm}\) is
TS EAMCET 2018 Easy - Five moles of hydrogen initially at STP is compressed adiabatically so that its temperature becomes \(673 \mathrm{~K}\). The increase in internal energy of the gas, in kilo joule is \((R=8.3 \mathrm{~J} / \mathrm{mol}-\mathrm{K} ; \gamma=1.4\) for diatomic gas \()\)TS EAMCET 2014 Easy
- A bullet of mass \(m_1\) is moving with speed \(v_0\) hits a sand bag of mass \(m_2\). If the speed of the bullet after passing the sand bag is \(\frac{v_0}{3}\), then the height \(h\) upto which the bag rises is (assume, \(g=\) acceleration due to gravity)
TS EAMCET 2020 Easy - The focal length of a lens of dispersive power 0.45 which should be placed in contact with a convex lens of focal length \(84 \mathrm{~cm}\) and dispersive power 0.21 to make the achromatic combination from the two lenses, in \(\mathrm{cm}\) isTS EAMCET 2011 Medium
- Degenerate electron pressure will not be sufficient to prevent core collapse of 'white dwarf if its mass becomes \(n\) times of solar mass. Value of 11 isTS EAMCET 2005 Hard
More PYQs from TS EAMCET
- Photodiodes are mostly operated in reverse biased condition becauseTS EAMCET 2023 Medium
- A distribution transformer with an efficiency of \(90 \%\) supplies to a colony of 10 homes. All the 10 homes have electrical oven running at the same time, that draw 20 A current from \(220 \mathrm{~V}\) lines. The power dissipated as heat in the transformer isTS EAMCET 2018 Easy
- A glass flask of volume one litre is filled completely with mercury at \(0^{\circ} \mathrm{C}\). The flask is now heated to \(100^{\circ} \mathrm{C}\). Coefficient of volume expansion of mercury is \(1.82 \times 10^{-4} /{ }^{\circ} \mathrm{C}\) and coefficient of linear expansion of glass is \(0.1 \times 10^{-4} /{ }^{\circ} \mathrm{C}\). During this process, amount of mercury which overflows isTS EAMCET 2013 Medium
- A vibration magnetometer consists of two identical bar magnets placed one over the other such that they are perpendicular and bisect each other. The time period of oscillation in a horizontal magnetic field \(2^{5 / 4} \mathrm{~s}\). One of the magnets is removed and if the other magnet oscillates in the same field, then the time period in seconds is :TS EAMCET 2003 Hard
- Wave picture of light has failed to explainTS EAMCET 2024 Easy
- If a disc of mass \(M\) and radius \(R\) rotates with an angular acceleration \(a_{\text {, }}\) of the torque acting on the disc isTS EAMCET 2018 Easy