Which one of the following groups have quantities that do not have the same dimensions?

Options

A. Velocity, Speed
B. Pressure, `("Work")/("Volume")`
C. Force, Impulse
D. Work, Energy

Answer

c

Explanation

The quantities in the group (a), (b) and (d) i.e. (Velocity, Speed), `("Pressure", ("Work")/("Volume"))` and (Work, Energy) have the same dimensions.
But Impulse = Force `xx` Time
Hence I and F cannot have the same dimensions.
Note : `("Work")/("Volume")=(FxxL)/(AxxL)=(F)/(A)` = Pressure