JEE Advanced 2023 · Paper 1

JEE Advanced 2023 Mathematics question on Three Dimensional Geometry

Let ℓ1\ell_1 and ℓ2\ell_2 be the lines r⃗1=λ(i^+j^+k^)\vec{r}_1 = \lambda(\hat{i}+\hat{j}+\hat{k}) and r⃗2=(j^−k^)+μ(i^+k^)\vec{r}_2 = (\hat{j}-\hat{k})+\mu(\hat{i}+\hat{k}), respectively. Let XX be the set of all the planes HH that contain the line ℓ1\ell_1. For a plane HH, let d(H)d(H) denote the smallest possible distance between the points of ℓ2\ell_2 and HH. Let H0H_0 be a plane in XX for which d(H0)d(H_0) is the maximum value of d(H)d(H) as HH varies over all planes in XX.

Match each entry in List-I to the correct entries in List-II.
List-I
(P) The value of d(H0)d(H_0) is
(Q) The distance of the point (0,1,2)(0,1,2) from H0H_0 is
(R) The distance of origin from H0H_0 is
(S) The distance of origin from the point of intersection of planes y=zy=z, x=1x=1 and H0H_0 is
List-II
(1) 3\sqrt{3}
(2) 13\dfrac{1}{\sqrt{3}}
(3) 00
(4) 2\sqrt{2}
(5) 12\dfrac{1}{\sqrt{2}}
  1. A.
    (P)→(2)(P)\rightarrow(2) \quad (Q)→(4)(Q)\rightarrow(4) \quad (R)→(5)(R)\rightarrow(5) \quad (S)→(1)(S)\rightarrow(1)
  2. B.
    (P)→(5)(P)\rightarrow(5) \quad (Q)→(4)(Q)\rightarrow(4) \quad (R)→(3)(R)\rightarrow(3) \quad (S)→(1)(S)\rightarrow(1)
  3. C.
    (P)→(2)(P)\rightarrow(2) \quad (Q)→(1)(Q)\rightarrow(1) \quad (R)→(3)(R)\rightarrow(3) \quad (S)→(2)(S)\rightarrow(2)
  4. D.
    (P)→(5)(P)\rightarrow(5) \quad (Q)→(1)(Q)\rightarrow(1) \quad (R)→(4)(R)\rightarrow(4) \quad (S)→(2)(S)\rightarrow(2)
Show answer

Correct option: B

[JEE Advanced 2023 · Paper 1]

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