Surface Tension 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 Surface Tension with explanations for effective preparation. Practice of BITSAT Physics PYQs including Surface Tension questions regularly will improve accuracy, speed, and confidence in the BITSAT 2026 exam.
Also Read
BITSAT PYQs for Surface Tension with Solutions
1.
Two circular plates of radius $5\, cm$ each, have a $0.01\, mm$ thick water film between them. Then what will be the force required to separate these plate (S.T. of water = $73$ dyne/cm) ?- 125 N
- 95 N
- 115 N
- 105 N
2.
The work done in blowing a soap bubble of surface tension $ 0.06 ??Nm^{-1}$ from $2 \,cm$ radius to $5 \,cm$ radius is.- 0.004168 J
- 0.003168 J
- 0.003158 J
- 0.004568 J
3.
A capillary tube of radius $r$ is immersed vertically in a liquid such that liquid rises in it to height $h$ (less than the length of the tube). Mass of liquid in the capillary tube is $m$. If radius of the capillary tube is increased by $50 \%$, then mass of liquid that will rise in the tube, is- $\frac {2}{3} m$
- m
- $\frac {3}{2} m$
- $\frac {9}{4} m$
4.
The surface tension of soap solution is $0.03\, N/m$. The work done in blowing to form a soap bubble of surface area $40 \, cm^2, (in\, J)$ is- $ 1.2 \times 10^{-4} $
- $ 2.4 \times 10^{-4} $
- $ 12 \times 10^{-4} $
- $ 24 \times 10^{-4} $
5.
A mercury drop of radius $1 \,cm$ is sprayed into $10^{6}$ drops of equal size. The energy expended in joule is (surface tension of mercury is $460 \times 10^{-3}\,N / m$ ):- $0.057$
- $5.7$
- $5.7 \times 10^{-4}$
- $5.7 \times 10^{-6}$
6.
With the increase in temperature, the angle of contact- decreases
- increases
- remains constant
- sometimes increases and sometimes decreases
Comments