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A tunnel is made inside earth passing th...

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

A

Kinetic energy of particle is maximum at centre and its potential energ is zero at center

B

Velocity of particle is proportional to x [where x is distance of particle from center of earth

C

Kinetic energy of particle is maximum when it reaches on the other side of tunnel

D

Kinetic energy of particle is maximum at center

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The correct Answer is:
D
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