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Per NCERT §7.3, the dimensions of the gravitational constant G are which?
A[M L T⁻²]
B[M⁻¹ L T⁻²]
C[M⁻¹ L³ T⁻²]
D[M L² T⁻²]
Answer & Solution
Correct answer: C. [M⁻¹ L³ T⁻²]
NCERT §7.3: F = Gm₁m₂/r² ⇒ G = Fr²/(m₁m₂) has dimensions [M L T⁻²][L²]/[M²] = [M⁻¹ L³ T⁻²].
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