The net work done by an ideal gas going through the cycle as shown in the $p-V$ diagram below is

A diatomic gas $\left(C_p=\frac{7}{2} R\right)$ does 200 J of work when it is expanded isobarically. The heat given to the gas in the process is
Statement I Gas thermometers are less sensitive than liquid thermometers.
Statement II The ratio of universal gas constant and avogadro's number is called Boltzmann's constant.
Statement III The density of a given mass of a gas at constant pressure is inversely proportional to its absolute temperature.
The correct option among the following is
The distance between two successive minima of a transverse wave is 2.7 m . Five crests of the wave pass a given point along the direction of travel every 15.0 s . The speed of the wave is
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