Which of the following quantities has the same S.I. unit as that of pressure?(a) Work(b) Energy / Velocity(c) Energy / Displacement(d) mass X (velocity)^2/VolumeI got this question at a job interview.Question is taken from Fluids Mechanical Properties Pressure topic in portion Mechanical Properties of Fluids of Physics – Class 11

Which of the following quantities has the same S.I. unit as that of pr

1.	Which of the following quantities has the same S.I. unit as that of pressure?(a) Work(b) Energy / Velocity(c) Energy / Displacement(d) mass X (velocity)^2/VolumeI got this question at a job interview.Question is taken from Fluids Mechanical Properties Pressure topic in portion Mechanical Properties of Fluids of Physics – Class 11
Answer» The correct choice is (d) mass X (velocity)^2/VOLUME Best explanation: The S.I. unit of pressure is N/m^2. Work has the unit of NM. Energy/Velocity has the unit of Nm/(m/s)= Ns. The unit of energy/disp is Nm/m = N. The unit of mass X (velocity) ^2/Volume is same as that of energy per unit volume becausemass X (velocity)^2 is EQUAL to energy, which is in TURN equal to Nm/m^3 = N/m^2,therefore this is the correct option.

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