JEE Main 2026 · 2 Apr · Shift 2 · Physics Q26

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PhysicsSingle correct+4 / -1Question 26 of 75

Dimensions of universal gravitational constant ( $G$ ) in terms of Planck's constant ( $h$ ), distance ( $L$ ), mass ( $M$ ) and time ( $T$ ) are ________.

[hTLM^{-2}]

[hT^{-1}LM^{-2}]

[hTL^2M^{-2}]

[h^{-1}T^{-1}LM^{-2}]

Answer and worked solution

Official answer: B

Dimensions. $[G]=M^{-1}L^3T^{-2}$ and $[h]=ML^2T^{-1}$ .

Check (B). $hT^{-1}LM^{-2}$ has dimensions
$ML^2T^{-1}\cdot T^{-1}\cdot L\cdot M^{-2}=M^{-1}L^3T^{-2}\ ✓$

The others fail: (A) has $T^{0}$ , (C) has $L^4$ , (D) has $M^{-3}$ .

(B)

Topics:Dimensional analysis

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JEE Main 2026 · 2 Apr · Shift 2, Physics question 26