1.

The density of a solid at normal pressure is p. When the solid is subjected to an excess pressure P_(1), the density changes top'. If the bulk modulus of the solid is k, then the ratio (p')/p is

Answer»

`1+p/k`
`1+k/p`
`p/(p+k)`
`k/(p+k)`

Solution :Since density `p=m/V`
`thereforedp=(-m)/(V^(2))DV`
`therefore(dp)/P=(-dV)/V`
Substituting this VALUE in bulk MODULUS, K`=(-P)/(dV//V)`
`K=(-P)/((-dp)/p)=(PP)/(dp)`
with increase in pressure, the density increases
`thereforedp=p.-p`
`thereforeK=(Pp)/(p.-p)`
`therefore(p.-p)/p=p/K`
`(p.)/p=(1+p)/K`
so correct choice is (a).


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