MHT CET202416 May 2024Morning ShiftPhysicsMechanical Properties of FluidsActual
When capillary is dipped vertically in water, rise of water in capillary is ' h '. The angle of contact is zero. Now the tube is depressed so that its length above the water surface is h 3 . The new apparent angle of contact is ( 0^ =1 )
Options
- A⁻¹ ( 1 2 )
- B⁻¹ ( 1 3 )
- C⁻¹ ( 1 4 )
- D⁻¹ ( 1 6 )
Correct answer
B. ⁻¹ ( 1 3 )
Step-by-step solution
Surface tension in terms of capillary rise h is array ll & T = rh g 2 rh ^ g 2 ^ & ^ = h ^ h = 1 3 & ^ = 1 3 0^ = 1 3 & ^ = ⁻¹ ( 1 3 ) array