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QNEET-2016-Ph-1063: NEET 2016 Physics - Class 11 NEET-2016-Ph-1063 Solution: At what height from the surface of earth the gravitation…
At what height from the surface of earth the gravitation potential and the value of g are and respectively? Take the radius of earth as 6400 km. 1400 km 2000 km 2600 km 1600 km
Multiple Choice Options
- A 1400 km
- B 2000 km
- C 2600 km
- D 1600 km
Step-by-Step Verified Solution
As we know, gravitational potential (v) and acceleration due to gravity (g) with height
V = _ G M R + h = _ 5.4 _ 10 7 ...(i)
and g = G M ( R + h ) 2 = 6 ...(ii)
Dividing (i) by (ii)
_ G M R + h G M ( R + h ) 2 = _ 5.4 _ 10 7 6
_ _ 5.4 _ 10 7 ( R + h ) = 6
_ R + h = 9000 km so, h = 2600 km