We have our entry test exams too. Difficult and critical as it can be. However, I did O/A level, which are as critical as these questions are. Nothing, fancy I can say about that above question. In my experience, I always had good teacher of Math/Chem in O/A level in
DPS Lahore, even in BSc, but not good teachers of Physics. It extends later to dynamics, then thermodynamics, turbo-machinery, and then fluid dynamics.
The math was always there, like Calculus, Differential equation, Liner algebra,, numerical methods but its application (Physics) was missing in my experience.
Whats your say in it.
@khansaheeb @JamD