Question

Which of the following physical quantities has a unit but no dimensions?

• A. Relative velocity
• B. Relative density
• C. Strain
• D. Angle

Answer 1

Answer: (D)

Angle

Answer 2

Among the given physical quantities angle has a unit but no dimensions.

Angle = $\left[ \mathrm { M } ^ { 0 } \mathrm {~L} ^ { 0 } \mathrm {~T} ^ { 0 } \right]$

The SI units of angle is radian.