Home › CBSE Class 11 (Science) › Physics › Mechanical Properties of Fluids › A soap bubble of radius 1 cm and surface tension…
A soap bubble of radius 1 cm and surface tension 0.03 N/m has what excess pressure?
A12 Pa
B6 Pa
C3 Pa
D24 Pa
Answer & Solution
Correct answer: A. 12 Pa
A bubble has two surfaces, so excess pressure is 4S/r = 4 x 0.03 / 0.01 = 12 Pa.
Related questions
What does the Reynolds number help predict in a pipe?Which flow is dominated by inertial forces and shows chaotic eddies?Which kind of flow occurs at low Reynolds numbers?The Reynolds number is a ratio of which two forces?Why does fluid pressure increase with depth?The centre of buoyancy of an object is the centre of gravity of what?A wooden block floats in water with half its volume submerged. What is the ratio of block An object denser than the surrounding fluid will do what?