Student Login

Home›Chapters›Surface Tension PYQs›Angle of Contact & Capillarity›Question 62

JEE Main 2019 (9 Apr, Shift 1) · Angle of Contact & Capillarity

Angle of Contact & Capillarity question from JEE Main 2019 (9 Apr, Shift 1)

Q62JEE Main 2019 · 9 APR · SHIFT 1Medium

Angle of Contact & Capillarity

If 'M' is the mass of water that rises in a capillary tube of radius 'r', then mass of water which will rise in a capillary tube of radius '2r' is:

Show answer and solution

Answer: (d)

$h = \dfrac{2T\cos\theta}{r\rho g} \propto \dfrac{1}{r}$ .
Mass $m = \pi r^2 h\rho \propto r$ (equivalently, weight $mg$ = upward force $2\pi r T\cos\theta \propto r$ ).
Radius $2r \Rightarrow$ mass $2M$ .
So the answer is (d) $2M$ .

Report a mistake

More questions on Angle of Contact & Capillarity

Three liquids of densities ρ 1, ρ 2 and ρ 3 (with ρ 1 > ρ 2 > ρ 3), having the same value…NEET 2016 (Phase 2)
Water rises to a height h in capillary tube. If the length of capillary tube above the…NEET 2015 (AIPMT)
A capillary tube is immersed vertically in water and the height of the water column is x…JEE Main 2014 (9 Apr, Shift 1)
The wettability of a surface by a liquid depends primarily onNEET 2013
Wax is coated on the inner wall of a capillary tube and the tube is then dipped in water…JEE Main 2013 (23 Apr, Shift 1)
This question has Statement-1 and Statement-2. Of the four choices given after the…JEE Main 2013 (9 Apr, Shift 1)
A capillary tube (A) is dipped in water. Another identical tube (B) is dipped in a…JEE Main 2008 (AIEEE)
A 20 cm long capillary tube is dipped in water. The water rises up to 8 cm. If the entire…JEE Main 2005 (AIEEE)