Question

The dimensions ML⁻¹ T⁻² may correspond to
(a) work done by a force
(b) linear momentum
(c) pressure
(d) energy per unit volume.

Answer 1

(c) pressure
(d) energy per unit volume

[Work done] = [ML²T⁻²]
[Linear momentum] = [MLT⁻¹]
[Pressure] = [ML⁻¹ T⁻²]
[Energy per unit volume] = [ML⁻¹ T⁻²]

From the above, we can see that pressure and energy per unit volume have the same dimension, i.e., ML⁻¹ T⁻².