Ques. 1JEE Main 2026, 4 April (Morning Shift)
The surface tension of a soap solution is 3.5 10-2 N/m. The work required to increase the radius of a soap bubble from 1 cm to 2 cm is 10-6 J. The value of is . ( =22/7)
Mechanical Properties of Fluids
Previous year questions with solutions · 2024 – 2026
65Questions
48Papers covered
4.21%Weightage 2026▲ 5.3% vs last year
’24
’25
’26
Year-wise statistics questions · papers · average per paper · weightage
| Year | Questions | Papers | Avg / paper | Weightage |
|---|---|---|---|---|
| 2026 | 20 | 19 | 1.1 | 4.21% ▲ 5.3% vs last year |
| 2025 | 19 | 19 | 1 | 4.00% ▼ 7.7% vs last year |
| 2024 | 26 | 20 | 1.3 | 4.33% |
Ques. 2JEE Main 2026, 24 January (Evening Shift)
A soap bubble of surface tension 0.04 N/m is blown to a diameter of 7 cm. If (15000 - x) of work is done in blowing it further to make its diameter 14 cm, then the value of x is . ( = 22/7)
Ques. 3JEE Main 2024, 6 April (Morning Shift)
A big drop is formed by coalescing 1000 small droplets of water. The ratio of surface energy of 1000 droplets to that of energy of big drop is 10x. The value of x is .
Ques. 4JEE Main 2024, 4 April (Morning Shift)
A soap bubble is blown to a diameter of 7 cm. 36960 erg of work is done in blowing it further. If surface tension of soap solution is 40 dyne/cm then the new radius is cm. Take ( = 227 ).
Ques. 5JEE Main 2024, 30 January (Evening Shift)
A big drop is formed by coalescing 1000 small identical drops of water. If E1 be the total surface energy of 1000 small drops of water and E2 be the surface energy of single big drop of water, then E1:E2 is x:1 where x= .