JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Hyperbola

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Let the eccentricity of the hyperbola be and length of its latus rectum be , If is a tangent to the hyperbola H , then the value of is equal to
  1. (A)18
  2. (B)20✓ Correct
  3. (C)24
  4. (D)32

Answer: (B)

Solution

For a hyperbola , the tangent with slope is . Here , so .

Given , we get , so .

The latus rectum is . Substituting : , giving .

Then .

Therefore .

JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Single correct option

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