TS EAMCET · Physics · Mechanical Properties of Fluids
A copper ball of radius \(3.0 \mathrm{~mm}\) falls in an oil tank of viscosity \(1 \mathrm{~kg} / \mathrm{ms}\). Then, the terminal velocity of the copper ball will be (Density of oil \(=1.5 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\), Density of copper \(=9 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\) and \(g=10 \mathrm{~m} / \mathrm{s}^2\).)
- A \(18 \times 10^2 \mathrm{~m} / \mathrm{s}\)
- B \(25 \times 10^2 \mathrm{~m} / \mathrm{s}\)
- C \(15 \times 10^2 \mathrm{~m} / \mathrm{s}\)
- D \(20 \times 10^2 \mathrm{~m} / \mathrm{s}\)
Answer & Solution
Correct Answer
(C) \(15 \times 10^2 \mathrm{~m} / \mathrm{s}\)
Step-by-step Solution
Detailed explanation
Given, radius of copper ball, \(r=3 \times 10^{-3} \mathrm{~m}\), viscosity of oil, \(\eta=1 \mathrm{~kg} / \mathrm{ms}\), density of oil, \(\rho=1.5 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\) and density of copper, \(\sigma=9 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\) Terminal…
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
- A man slides down on a telegraphic pole with an acceleration equal to one-fourth of acceleration due to gravity. The frictional force between man and pole is equal to in terms of man's weight \(w\)TS EAMCET 2007 Easy
- A conducting rod of length \(L\) rotates with angular speed \(\omega\) in a uniform magnetic field of induction \(B\) which is perpendicular to its motion. The induced emf developed between the two ends of the rod isTS EAMCET 2002 Easy
- Two cylinders \(A\) and \(B\) fitted with pistons, contain equal number of moles of an ideal monoatomic gas at \(400 \mathrm{~K}\). The piston of \(A\) is free to move while that of \(B\) is held fixed. Same amount of heat energy is given to the gas in each cylinder. If the rise in temperature of the gas in \(A\) is \(42 \mathrm{~K}\), the rise in temperature of the gas in \(B\) is \((\gamma=5 / 3)\)TS EAMCET 2007 Medium
- A current flows along a thin wire shaped as shown in figure. The radius of curved part of the wire is equal to , the angle . The magnitude of magnetic field at the point is approximately
TS EAMCET 2022 Medium - A charge q is placed at the centre ' O ' of a circle of radius R and two other charges q and q are placed at the ends of the diameter AB of the circle. The work done to move the charge at point B along the circumference of the circle to a point C as shown in the figure is
TS EAMCET 2025 Medium - A closed pipe is suddenly opened and changed to an open pipe of same length. The fundamental frequency of the resulting open pipe is less than that of 3rd harmonic of the earlier closed pipe by \(55 \mathrm{~Hz}\). Then, the value of fundamental frequency of the closed pipe isTS EAMCET 2014 Medium
More PYQs from TS EAMCET
- Alpha rays emitted from a radioactive substance areTS EAMCET 2020 Easy
- A coil has inductance of \(0.4 \mathrm{H}\) and resistance of \(8 \Omega\). It is connected to an \(\mathrm{AC}\) source with peak emf \(4 \mathrm{~V}\) and frequency \(\frac{30}{\pi} \mathrm{Hz}\). The average power dissipated in the circuit isTS EAMCET 2018 Hard
- A monoatomic gas does of work when it is expanded isobarically. How much of heat is given to the gas in the processTS EAMCET 2022 Easy
- A man of mass 60 kg is standing in a lift moving up with a retardation of \(2.8 \mathrm{~ms}^{-2}\). The apparent weight of the man isTS EAMCET 2025 Medium
- Assertion (A): Optical fibres are widely used in communication network.Reason (R) Optical fibres are small in size, light weight, flexible and there is no scope for interference in them.TS EAMCET 2004 Easy
- The air columns in two tubes closed at one end vibrating in their fundamental modes produce 2 beats per second. The number of beats produced per second when the same tubes are vibrated in their fundamental mode with their both ends open areTS EAMCET 2025 Medium