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Per NCERT §7.4, the value of the universal gravitational constant G is approximately which?
A6.67 × 10⁻¹¹ N m² kg⁻²
B6.67 × 10⁻⁸ N m² kg⁻²
C9.81 N m² kg⁻²
D8.85 × 10⁻¹² N m² kg⁻²
Answer & Solution
Correct answer: A. 6.67 × 10⁻¹¹ N m² kg⁻²
NCERT §7.4: G = 6.67 × 10⁻¹¹ N m² kg⁻². First measured by Henry Cavendish in 1798 using a torsion balance.
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