Related Questions

The change in length due to a tensile or compressive force acting on a body is given by (where P = Tensile or compressive force acting on the body, $$l$$ = Original length of the body, A = Cross-sectional area of the body and E = Young's modulus for the material of the body)
A $$\frac{{{\text{P}}l{\text{A}}}}{{\text{E}}}$$
B $$\frac{{{\text{P}}l}}{{{\text{AE}}}}$$
C $$\frac{{\text{E}}}{{{\text{P}}l{\text{A}}}}$$
D $$\frac{{{\text{AE}}}}{{{\text{P}}l}}$$
If a given force (or a given system of forces) acting on a body __________ the position of the body, but keeps it in equilibrium, then its effect is to produce internal stress in the body.
A Change
B Does not change
C Changes periodically
D None of these
If a body floating in a liquid occupies a new position and remains at rest in this new position, when given a small angular displacement, the body is said to be in __________ equilibrium.
A Neutral
B Stable
C Unstable
D None of these
When two bodies are in thermal equilibrium with a third body, they are also in thermal equilibrium with each other. This statement is called
A Zeroth law of thermodynamics
B First law of thermodynamics
C Second law of thermodynamics
D Kelvin Planck's law
A survey was conducted among the students of Khulna University to find out how many forms of physical exercise usually swam, 25% said they usually did jogging, 20% said they played cricket, 15% said they usually played football and 20 respondents said they did not take any form of exercise. From the above findings it can be concluded that.
A The student of khulna University do not usually take physical exercise.
B No respondent took more than one form of exercise.
C The method of data collection was not valid.
D Some of the respondents took more than one form of exercise.
A body floating in a liquid is said to be in neutral equilibrium, if its metacentre
A Coincides with its centre of gravity
B Lies above its centre of gravity
C Lies below its centre of gravity
D Lies between the centre of buoyancy and centre of gravity
A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy.
A Coincides with
B Lies below
C Lies above
D None of these
A floating body is said to be in a state of stable equilibrium
A when its metacentric height is zero
B when the metacentre is above the centre of gravity
C when the metacentre is below the centre of gravity
D only when its centre of gravity is below its centre of buoyancy
In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of
A Concentrations
B Chemical potentials
C Activity co-efficients
D Mass transfer co-efficients
When equilibrium price rises but equilibrium quantity remains unchanged, the cause is
A Supply and demand both increase equally
B Supply and demand both decrease equally
C Supply decreases and demand increases
D Supply increases and demand decreases

Next steps