Question

Periodic time of a satellite revolving above Earth’s surface at a height equal to R, where R the radius of Earth, is [g is acceleration due to gravity at Earth’s surface]

(a) 2π √2R/g

(b) 4√2π√R/g

(c) 2π√R/g

(d) 8π√R/g

Answer 1

Correct option (b) 4√2π√R/g

Explanation