Line of intersection of two planes - class-XII

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Multiple Choice

The line of intersection of the planes $\overrightarrow { r } .\left( 3\hat { i } -\hat { j } +\hat { k }  \right) =1$ and $\overrightarrow { r } .\left( \hat { i } +4\hat { j } -2\hat { k }  \right) =2$ is parallel to vector

  1. $-2\hat { i } +7\hat { j } +13\hat { k } $
  2. $2\hat { i } +7\hat { j } -13\hat { k } $
  3. $-2\hat { i } -7\hat { j } +13\hat { k } $
  4. $2\hat { i } +7\hat { j } +13\hat { k } $
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