Question

which pairs do not have equal dimension . a) force and impulse b) force and torque c) velocity and time d) stress and pressure​

Answer 1

Answer:

Options (a), (b), and (c) are the pairs that do not have equal dimensions.

Explanation:

In the given options only stress and pressure have the same dimension. M¹L⁻¹T⁻² is the dimension of stress and pressure. Dimensions of other quantities are as follows:

Force     - M¹L¹T⁻²

Impulse - M¹L¹T⁻¹

Torque  - M¹L²T⁻²

Velocity - M⁰L¹T⁻¹

Time      - M⁰L⁰T¹

It is clear that all pairs except stress and velocity have different dimensions.