Question

Statement I: Angle and angular displacement a dimensionless quantities.
Statement II: Angle is equal to arc length divided by radius.

• A. If both statement I and statement II are true and statement II is the correct explanation of statement I.
• B. If both statement I and statement II are true but statement II is not the correct explanation of statement I.
• C. If statement I is true but statement II is false.
• D. If both statement I and statement II are false

Answer 1

Answer: (A)

Angle or angular displacement $=\frac{\text{Arc length}}{\text{Radius}}=\frac{\left[L\right]}{\left[L\right]}$ It is a dimensionless quantity.