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
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
The necessary condition for forces to be in equilibrium is that these should be
A Coplanar
B Meet at one point
C Both (A) and (B) above
D All be equal
The necessary condition for phase equilibrium in a multiphase system of N components is that the
A Chemical potentials of a given component should be equal in all phases
B Chemical potentials of all components should be same in a particular phase
C Sum of the chemical potentials of any given component in all the phases should be the same
D None of these
The necessary and sufficient condition for equilibrium between two phases is
A The concentration of each component should be same in the two phases
B The temperature of each phase should be same
C The pressure should be same in the two phases
D The chemical potential of each component should be same in the two phases
 একটি ফার্মের স্বল্পকালীন ভারসাম্যে প্রয়োজনীয় শর্ত কোনটি? (Which one is the necessary condition for the short-run equilibrium of a firm?)
A MR > AR
B MR > MC
C MR = MC
D Slope of MC > Slope of MR
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
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 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

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