Which of the following is incorrect for physisorption?

The period of the function $f(\theta) = \sin \frac{\theta}{3} + \cos \frac{\theta}{2}$ is (in $pi$)

$AB$ crystallizes in a body-centred cubic lattice with edge length '$a$' equal to $387 \ pm$. The distance between two oppositely charged ions in the lattice is ............. $pm$.

The study of homologous structures in mature organisms provides evidence for evolutionary relationships among certain groups of organisms. Which field of study includes this evidence of evolution?

Which of the following statements is $NOT$ correct?

If the straight line $y=mx+c$ is parallel to the axis of the parabola $y^2=lx$ and intersects the parabola at $\left(\frac{c^2}{8}, c\right)$,then the length of the latus rectum is