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JEE Advance 2025 Paper 1

JEE Advance · 2025

94 questions · One at a time

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51
MCQ4 marks

Let L1L_{1}   be the line of intersection of the planes 2x+3y+z=42x + 3y + z = 4   and x+2y+z=5x + 2y + z = 5  . Let L2L_{2}   be the line passing through P(2,1,3)P(2, -1, 3)   and parallel to L1L_{1}  . Let MM   be the plane 2x+y2z=62x + y - 2z = 6  . Suppose L2L_{2}   meets MM   at QQ  . Let RR   be the foot of the perpendicular from PP   to MM  . Which statement(s) is (are) TRUE?

  • A.The length of the line segment PQ is 939\sqrt{3}Correct
  • B.The length of the line segment QR is 15
  • C.The area of ΔPQR\Delta PQR   is 32234\frac{3}{2}\sqrt{234}Correct
  • D.The acute angle between PQ and PR is cos1(123)\cos^{-1}(\frac{1}{2\sqrt{3}})
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