MCQ
The relation between two specific heats of a gas is
- ✓${C_P} - {C_V} = \frac{R}{J}$
- B${C_V} - {C_P} = \frac{R}{J}$
- C${C_p} - {C_v} = J$
- D${C_v} - {C_p} = J$
This is the expression when $R$ is given in iuris of $J / mol / K$. when we convert into calories, the expression changes to -
$C_{p}-C_{v}=\frac{R}{T}$
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| List$-I$ | List$-II$ |
| $(a)$ Phase difference between current and voltage in a purely resistive $AC$ circuit | $(i)$ $\frac{\pi}{2} ;$ current leads voltage |
| $(b)$ Phase difference between current and voltage in a pure inductive $AC$ circuit | $(ii)$ zero |
| $(c)$ Phase difference between current and voltage in a pure capacitive $AC$ circuit | $(iii)$ $\frac{\pi}{2} ;$ current lags voltage |
| $(d)$ Phase difference between current and voltage in an $LCR$ series circuit | $(iv)$ $\tan ^{-1}\left(\frac{X_{C}-X_{L}}{R}\right)$ |
Choose the most appropriate answer from the options given below: