Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Units and Measurements

Question:

The dimensions of universal gravitational constant are

Options:

$M^{–2}L^2T^{–2}$

$M^{–1}L^3T^{–2}$

$ML^{–1}T^{–2}$

$ML^2T^{–2}$

Correct Answer:

$M^{–1}L^3T^{–2}$

Explanation:

The correct answer is Option (2) → $M^{–1}L^3T^{–2}$

$F=G\frac{m_1m_2}{r^2}$

$∴G=\frac{Fr^2}{m_1m_2}=M^{–1}L^3T^{–2}$