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JEE Mains · Maths · STD 11 - 10.1 circle and system of circle

माना समीकरण \(x ^{2}+ y ^{2}+ px +(1- p ) y +5=0\) उन वर्तों को दर्शाती है, जिनकी चर त्रिज्या \(I \in(0,5]\) है। तो समुच्चय \(S =\left\{ q : q = p ^{2}\right.\) तथा \(q\) एक पूर्णाक है \(\}\) में अवयवों की संख्या है ......... |

  1. A \(60\)
  2. B \(61\)
  3. C \(62\)
  4. D \(63\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(61\)

Step-by-step Solution

Detailed explanation

\(r=\sqrt{\frac{\mathrm{p}^{2}}{4}+\frac{(1-\mathrm{p})^{2}}{4}-5}=\frac{\sqrt{2 \mathrm{p}^{2}-2 \mathrm{p}-19}}{2}\) Since, \(r \in(0,5]\) So, \(0\,<\,2 \mathrm{p}^{2}-2 \mathrm{p}-19\, \leq 100\)…
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