Mechanical Properties of Fluid is an important topic in the Physics section in BITSAT exam. Practising this topic will increase your score overall and make your conceptual grip on BITSAT exam stronger.
This article gives you a full set of BITSAT PYQs for Mechanical Properties of Fluid with explanations for effective preparation. Practice of BITSAT Physics PYQs including Mechanical Properties of Fluid questions regularly will improve accuracy, speed, and confidence in the BITSAT 2026 exam.
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BITSAT PYQs for Mechanical Properties of Fluid with Solutions
1.
Five identical springs are used in the three configurations as shown in figure. The time periods of vertical oscillations in configurations (a), (b) and (c) are in the ratio:
\includegraphics[width=0.5\linewidth]{PH39.png}- \( 1:\sqrt{2}:\frac{1}{\sqrt{2}} \)
- \( 2:\sqrt{2}:\frac{1}{\sqrt{2}} \)
- \( \frac{1}{\sqrt{2}}:2:1 \)
- \( 2:\frac{1}{\sqrt{2}}:1 \)
2.
A ball whose density is $0.4 \times 10^3 \, kg/m^3$ falls into water from a height of $9\,cm$. To what depth does the ball sink?- 9 cm
- 6 cm
- 4.5 cm
- 2.25 cm
3.
A stream of electrons from a heated filament was passed between two charged plates at a potential difference \( V \) volt. If \( e \) and \( m \) are the charge and mass of an electron, then the value of \( \frac{h}{\lambda} \) is:- \( \sqrt{meV} \)
- \( \sqrt{2meV} \)
- \( meV \)
- \( 2meV \)
4.
Two vessels A and B are of the same size and are at the same temperature. A contains 1 g of hydrogen and B contains 1 g of oxygen. \( P_A \) and \( P_B \) are the pressures of the gases in A and B respectively, then \( \frac{P_A}{P_B} \) is:- 8
- 16
- 32
- 4
5.
A pendulum of mass \( 1 \) kg and length \( l = 1 \) m is released from rest at an angle \( \theta = 60^\circ \). The power delivered by all the forces acting on the bob at angle \( \theta = 30^\circ \) will be (Take, \( g = 10 \) m/s\( ^2 \)):- \( 13.4 \) W
- \( 20.4 \) W
- \( 24.6 \) W
- zero
6.
The magnifying power of a telescope is \( 9 \). When adjusted for parallel rays, the distance between the objective and eyepiece is 20 cm. The ratio of the focal length of the objective lens to the focal length of the eyepiece is:- 8
- 7
- 9
- 12
7.
The approximate depth of an ocean is $2700\, m$. The compressibility of water is $45.4 \times 10^{-11} Pa ^{-1}$ and density of water is $10^{3} kg / m 3 .$ What fractional compression of water will be obtained at the bottom of the ocean?- $1.0 \times 10^{-2}$
- $1.2 \times 10^{-2}$
- $1.4 \times 10^{-2}$
- $1.8 \times 10^{-2}$
8.
Calculate the molarity of a solution containing 5 g of NaOH dissolved in the product of H$_2$ – O$_2$ fuel cell operated at 1 A current for 595.1 hours.(Assume F = 96500C/mol of electron and molecular weight of NaOH as 40 g/mol).- 0.625 M
- 0.05 M
- 0.1 M
- 6.25 M
9.
A rectangular loop of length \( 2.5 \) m and width \( 2 \) m is placed at \( 60^\circ \) to a magnetic field of \( 4 \) T. The loop is removed from the field in \( 10 \) sec. The average emf induced in the loop during this time is:- \( -2 \) V
- \( +2 \) V
- \( +1 \) V
- \( -1 \) V
10.
A solid metallic cube having total surface area \( 24 \, m^2 \) is uniformly heated. If its temperature is increased by \( 10^\circ C \), calculate the increase in volume of the cube.
Given: \( \alpha = 5.0 \times 10^{-4} \, C^{-1} \)- \( 2.4 \times 10^6 \, cm^3 \)
- \( 1.2 \times 10^5 \, cm^3 \)
- \( 6.0 \times 10^4 \, cm^3 \)
- \( 4.8 \times 10^5 \, cm^3 \)
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