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CUET · MATHS · PYQ PAPER 2023

Match List-I with List-II
List-IList-II
(A) The equation of the line passing through the points \((-1,0,2)\) and \((3,4,6)\) is(I) \(\vec{r}=(-\hat{i}+2 \hat{k})+\lambda(4 \hat{i}+4 \hat{j}+4 \hat{k})\)
(B) The vector equation of the line \(\frac{x-1}{2}=\frac{y+1}{3}=\frac{4-z}{5}\) is(II) \(\vec{r}=(\hat{i}+3 \hat{j}+2 \hat{k})+\lambda(2 \hat{i}+\hat{j}+3 \hat{k})\)
(C) The equation of the line passing through \((1,3,2)\) and parallel to \(\frac{x+1}{2}=\frac{y-1}{1}=\frac{z+1}{3}\) is(III) \(\vec{r}=(-\hat{i}+2 \hat{j}+3 \hat{k})+\lambda(2 \hat{i}+\hat{j}+4 \hat{k})\)
(D) The equation of the line along \(2 \hat{i}+\hat{j}+4 \hat{k}\) and passing through \((-1,2,3)\) is(IV) \(\vec{r}=(\hat{i}-\hat{j}+4 \hat{k})+\lambda(2 \hat{i}+3 \hat{j}-5 \hat{k})\)
where \(\lambda\) is an arbitrary constant.
Choose the correct answer from the options given below:

  1. A (A)-(I),(B)-(II),(C)-(IV),(D)-(III)
  2. B (A)-(I),(B)-(IV),(C)-(II),(D)-(III)
  3. C (A)-(II),(B)-(III),(C)-(I),(D)-(IV)
  4. D (A)-(IV),(B)-(III),(C)-(I),(D)-(II)
Verified Solution

Answer & Solution

Correct Answer

(B) (A)-(I),(B)-(IV),(C)-(II),(D)-(III)

Step-by-step Solution

Detailed explanation

(A) \(\vec{r} = (-\hat{i} + 2\hat{k}) + \lambda((3-(-1))\hat{i} + (4-0)\hat{j} + (6-2)\hat{k})\) \(\vec{r} = (-\hat{i} + 2\hat{k}) + \lambda(4\hat{i} + 4\hat{j} + 4\hat{k})\) (Matches I) (B) Line \(\frac{x-1}{2}=\frac{y+1}{3}=\frac{z-4}{-5}\)…
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