Day 131: MHT-CET Physics

1. A.
   Free expansions are adiabatic expansions and there is no exchange of heat between system and environment.
2. B.
   A free expansion can be plotted on a p-V diagram.
3. C.
   There is no work done on the system or by the system.
4. D.
   It is an instantaneous change and the system is not in thermodynamic equilibrium.

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1. A.
   $\dfrac{2y}{3}$
2. B.
   $\dfrac{4y}{5}$
3. C.
   $\dfrac{5y}{4}$
4. D.
   $\dfrac{3y}{2}$

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1. A.
   $10$
2. B.
   $12$
3. C.
   $16$
4. D.
   $18$

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1. A.
   $\dfrac{\pi}{5}$
2. B.
   $\dfrac{\pi}{4}$
3. C.
   $\dfrac{\pi}{3}$
4. D.
   $\dfrac{\pi}{2}$

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1. A.
   $\dfrac{1}{4}$
2. B.
   $\dfrac{1}{2}$
3. C.
   $1$
4. D.
   $4$

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