Physics (AS & A Level) · Feb / March 2023 · Paper 12 · Question 2

The relationship between the variables D and T is given by the equation \[\frac{1}{T} = \frac{b}{\sqrt{D}} + c\] where b and c are constants. The unit of D is m^2 and the unit of T is s. What are the units of b and c?

1. Aunit of b: m s, unit of c: s
2. Bunit of b: m s^-1, unit of c: s^-1
3. Cunit of b: m^-1 s, unit of c: s
4. Dunit of b: m^-1 s^-1, unit of c: s^-1

As printed in the paper