1
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1
An ideal rigid diatomic gas undergoes expansion at constant pressure when $\Delta Q$ heat is added to it. What is the ratio of the change in the internal energy $\Delta U$ to the heat supplied $\Delta Q$ ?
A
$\frac{\Delta U}{\Delta Q}=\frac{3}{5}$
B
$\frac{\Delta U}{\Delta Q}=\frac{5}{7}$
C
$\frac{\Delta U}{\Delta Q}=\frac{7}{9}$
D
$\frac{\Delta U}{\Delta Q}=\frac{2}{3}$
2
IAT (IISER) 2020
MCQ (Single Correct Answer)
+4
-1
The fundamental constants are given to be permittivity constant $\left(\epsilon_0\right)$, Planck's constant $(h)$, velocity of light $(c)$, Newton's constant $(G)$ and Boltzmann's constant $\left(k_B\right)$. Which of the following quantities constructed out of the above constant has the dimensions of an electric charge?
A
$\sqrt{\frac{h G}{\epsilon_0^3}}$
B
$\sqrt{h c}$
C
$k_B \sqrt{h c}$
D
$\sqrt{\epsilon_0 h c}$
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