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Define (a) Compressibility (b) Rigidity ...

Define (a) Compressibility (b) Rigidity (c ) Fluidity.

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(a) compressibility. It is the property as a result of which the particles of any matter come closer on applying pressure.
(b) Rigidity. It is the capacity of the particles of a matter to resist a change in shape and size on applying stress.
(c ) Fluidity. It is the property as a result of which particles of a matter have tendency to flow.
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