Question Text
Question 1 :
When a drop of water is dropped on oil surface, then :
Question 2 :
The surface tension of a soap solution is $2*10^{-2}N/m$. To blow a bubble of radius $1 cm$, the work done is<br>
Question 3 :
A drop of water of radius r is falling through the air of coefficient of viscosity $\eta $ with a constant velocity of v. The resultant force on the drop is:
Question 4 :
Two spheres of the same material, but of radii R and 3R are allowed to fall vertically downwards through a liquid of density $\sigma$. The ratio of their terminal velocities is
Question 6 :
The type of braking system referred to as power brake makes use of<br/>
Question 7 :
The unit of the coefficient of viscosity in S.I. system is:<br/>
Question 8 :
A small steel ball falls through a syrup at a constant speed of $10 cm/sec.$ If the steel ball is pulled upwards with a force equal to twice its effective weight; how fast will it move upwards?
Question 11 :
The contact angle between a solid and a liquid is a property of <br>
Question 12 :
The volume of liquid flowing per second out of an orifice at the bottom of the tank does not depend upon:
Question 14 :
There are two liquid drops of different radii. The excess pressure inside over the outside is:-