Student Login

Home›Chapters›Surface Tension PYQs›Force due to Surface Tension›Question 10

MHT CET 2024 (2 May, Shift 2) · Force due to Surface Tension

Force due to Surface Tension question from MHT CET 2024 (2 May, Shift 2)

Q10MHT CET 2024 · 2 MAY · SHIFT 2Medium

Force due to Surface Tension

Liquid drops are falling slowly one by one from vertical glass tube. The relation between the weight of a drop ' $w$ ', the surface tension ' $T$ ' and the radius ' $r$ ' of the bore of the tube is (Angle of contact is zero)

Show answer and solution

Answer: (d)

Just before falling, the drop hangs from the rim of the bore of circumference $2\pi r$ .
Upward surface force $= 2\pi r T\cos 0^\circ = 2\pi r T$ .
Balance: $W = 2\pi r T$ . So the answer is (d).

Report a mistake

More questions on Force due to Surface Tension

A liquid drop of density ' ρ ' is floating half immersed in a liquid of density ' d '. If…MHT CET 2024 (3 May, Shift 2)
A steel coin of thickness ' d ' and density ' ρ ' is floating on water of surface tension…MHT CET 2022 (11 Aug, Shift 2)
A drop of liquid of density ρ is floating half immersed in a liquid of density σ and…JEE Main 2022 (25 Jul, Shift 2)
The force required to take away a flat circular plate of radius 2 cm from the surface of…MHT CET 2021 (20 Sep, Shift 1)
A needle is 7 cm long. Assuming that the needle is not wetted by water, what is the…MHT CET 2021 (22 Sep, Shift 2)
A thin metal disc of radius 'r' floats on water surface and bends the surface downwards…MHT CET 2021 (24 Sep, Shift 1)
A drop of liquid of density ' ρ ' is floating half immersed in a liquid of density ' d '…MHT CET 2021 (22 Sep, Shift 1)
A square frame of each side L is dipped in a soap and taken out. The force acting on the…MHT CET 2020 (16 Oct, Shift 2)