If \[p,\ q,\ r\] are in A.P. and are positive, the roots of the quadra – McqOptions

MCQOPTIONS

1.	If \[p,\ q,\ r\] are in A.P. and are positive, the roots of the quadratic equation \[p{{x}^{2}}+qx+r=0\] are all real for [IIT 1995]
A.	\[\left\| \,\frac{r}{p}-7\ \right\|\ \ge 4\sqrt{3}\]
B.	\[\left\| \ \frac{p}{r}-7\ \right\|\ <4\sqrt{3}\]
C.	All \[p\]and \[r\]
D.	No \[p\] and \[r\]
Answer» B. \[\left\| \ \frac{p}{r}-7\ \right\|\ <4\sqrt{3}\]

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