When the minutes hand covers a distance of 1h 30min, then what is the angular distance covered by it?

540°

We know that any hand of a watch covers 360^o in one revolution.

So, the regular distance covered by a minute hand in one hour is 360^o

So, it will cover in one and half hour

If the rotation is 1.5 times then the regular distance in angle also be 1.5 times = 360 × 1.5 = 540^o