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JEE Mains · Maths · STD 11 - 10.2 parabola,ellipse,hyperbola

જો પરવલય \(y ^{2}=2 x\) એ બિંદુ \(( a , 0) a \neq 0,\) માથી પસાર થાય છે તો \('a'\) ની કિમંત  . .  . કરતાં મોટી હોવી જોઇયે.

  1. A \(\frac{1}{2}\)
  2. B \(-\frac{1}{2}\)
  3. C \(-1\)
  4. D \(1\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(1\)

Step-by-step Solution

Detailed explanation

For standard parabola For more than \(3\) normals (on axis) \(x >\frac{ L }{2}\) (where \(L\) is length of \(L.R.\)) For \(y^{2}=2 x\) \(L.R.\) \(=2\) for \((a, 0)\) \(a>\frac{\text { L.R. }}{2} \Rightarrow a>1\)
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