Per NCERT §1.6.1, ANGLE has which dimensions, since it is the ratio of two lengths (arc/radius)?
A[L] only of length
B[T⁻¹] only of time
CDimensionless ratio
D[L²] only of area
Answer & Solution
Correct answer: C. Dimensionless ratio
NCERT §1.6.1: angle = arc length / radius = [L]/[L] = dimensionless. Refractive index, strain etc. are similar.
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