OnlineCBT
Physics · GRAVITATION
हिन्दीThe work done in lifting a body from height \( h_1 \) to height \( h_2 \) above the Earth's surface can be approximated by \( mg(h_2 - h_1) \) only when:
Correct answer · Option 1
\( h_1, h_2 \ll R_E \)
Explanation
The gravitational force can be treated as approximately constant and equal to \( mg \) only at distances very close to Earth's surface where \( h \ll R_E \).
