Question

If radius of earth is R then the height ‘h’ at which value of ‘g’ becomes one-fourth is

• A. $\frac { R } { 4 }$
• B. $\frac { 3 R } { 4 }$
• C. R
• D. $\frac { R } { 8 }$

Answer 1

Answer: (C)

R

Answer 2

$g ^ { \prime } = g \left( \frac { R } { R + h } \right) ^ { 2 } = \frac { g } { 4 }$ . By solving h = R