JEE Main · 2021 · 18 Mar 2021 · Shift 1 · Circle

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Choose the correct statement about two circles whose equations are given below:
  1. (A)circles have no meeting point
  2. (B)circles have two meeting points
  3. (C)circles have only one meeting point✓ Correct
  4. (D)circles have same centre

Answer: (C)

Solution

Completing squares gives

so the centres are and , each with radius . The distance between the centres is

which equals . The circles touch externally, so they have only one meeting point.

JEE Main · 2021 · 18 Mar 2021 · Shift 1 · Single correct option

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