A tunnel is made inside earth passing throgh centre of earth. A particle is dropped from the surface of earth. Select the correct statement :

Options

A. `2pisqrt((R)/g)+4sqrt(h/g)`
B. `2pisqrt((R)/g)+4sqrt((2h)/g)`
C. `2pisqrt((R)/g)+sqrt(h/g)`
D. `2pisqrt((R)/g)+sqrt((2h)/g)`

Answer

B