Identify the figure shown in the transverse section ($T$.$S$.):

If $R$ is the universal gas constant,the amount of heat needed to raise the temperature of $2 \, mol$ of an ideal monatomic gas from $273 \, K$ to $373 \, K$ when no work is done is: (in $, R$)

$A$ transverse sinusoidal wave moves along a string in the positive $x-$ direction at a speed of $10\, cm/s$. The wavelength of the wave is $0.5\, m$ and its amplitude is $10\, cm$. At a particular time $t$,the snapshot of the wave is shown in the figure. The velocity of point $P$ when its displacement is $5\, cm$ is:

Which of the following organisms has a cell wall composed of chitin?

Observe the following statements:
$A$. Integrating factor of $\frac{dy}{dx} + y = x^2$ is $e^x$.
$R$. Integrating factor of $\frac{dy}{dx} + P(x)y = Q(x)$ is $e^{\int P(x) dx}$.
Then,the true statement among the following is: