MHT CET202120 Sep 2021Evening ShiftPhysicsMechanical Properties of FluidsActual
The force required to take away a flat circular plate of radius 2 cm from the surface of water is [ . Surface tension of water .=70 10⁻³ Nm ⁻¹, = 22 7 ]
Options
- A4.4 10⁻⁴ ~N
- B8.8 10⁻³ ~N
- C6.6 10⁻⁴ ~N
- D11 10⁻³ ~N
Correct answer
B. 8.8 10⁻³ ~N
Step-by-step solution
The force required to take away circular plate due to surface tension aligned & F=2 r ~T & =2 22 7 2 10⁻² 70 10⁻³ & =8.8 10⁻³ ~N aligned