The compressibility of water is 6x 102 N-1m2. If one litre is subjected to a pressure of 4 x107 Nm-2, the decrease in its volume is
2.4 cc
10 cc
24 cc
15 cc
Bernoulli's principle is not involved in the working/explanation of
movement of spinning ball
carburettes of automobile
blades of a kitchen mixer
heart attack
Which one of the following statements is correct? In the case of
shearing stress there is change in volume
tensile stress there is no change in volume
shearing stress there is no change in shape
hydraulic stress there is no change in volume
The onset of turbulence in a liquid is determined by
Pascal's law
Magnus effect
Reynold's number
Bernoulli's principle
The temperature at which oxygen molecules have the same root mean square speed as that of hydrogen molecules at 300 K is
600 K
2400 K
4800 K
300 K
Mean free path of a gas molecule is
inversely proportional to number of molecules per unit volume
inversely proportional to diameter of the molecule
directly proportional to the square root of the absolute temperature
directly proportional to the molecular mass
A.
inversely proportional to number of molecules per unit volume
Mean free path
where, n = number of molecules/unit volume
d = diameter of the molecule
Hence, mean free path of a gas molecule is inversely proportional to number of molecules per unit volume.
A refrigerator with coefficient of performance releases 200 J of heat to a hot reservoir. Then the work done on the working substance is
100 J
150 J
If the frequency of human heart beat is 1.25 Hz, the number of heart beats in 1 min is
80
65
90
75
A particle oscillating under a force is a (k and b are constants)
simple harmonic oscillator
non linear oscillator
damped oscillator
forced oscillator