1.

The weight of the body at earth's surface is W. At a depth half way to the centre of earth its weight will be (Density of earth is uniform) :

Answer»

W
`(W)/(2)`
`(W)/(4)`
`(W)/(8)`

Solution :`mg.=mg(1-(d)/(R ))`
`therefore W.=W(1-((R )/(2))/(R ))=(W)/(2)`
Hence correct CHOICE is (B).


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