Let \( \alpha \) and \( \beta \) be the roots of equation \( p x^{2...

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Let \( \alpha \) and \( \beta \) be the roots of equation \( p x^{2}+q x+r= \)
\( \mathrm{P} \) \( 0, p \neq 0 \). If \( p, q, r \) are in A.P and \( 1 / \alpha+1 / \beta=4 \), then

W the value of \( |\alpha-\beta| \) is
(1) \( \sqrt{\frac{34}{9}} \)
(2) \( \frac{2 \sqrt{13}}{9} \)
(3) \( \sqrt{\frac{61}{9}} \)
(4) \( 2 \sqrt{\frac{17}{9}} \)
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