alleryGravitational field strength I (also called g) at distance r from a point mass M:
AI = GM/r²
BI = M/r
CI = GMm/r²
DI = GM/r
Answer & Solution
Correct answer: A. I = GM/r²
Gravitational field strength is force per unit test mass: I = F/m_test = GM/r².
Same form as gravitational acceleration g, since for a test mass m, F = m × I = m × g.
Keep practising Gravitation
Browse all Gravitation questions for CBSE Class 9, or explore more Science topics.