Mathematics · 2024
JEE Main · 6 April 2024, Shift 2 · Q18
Let a =2 i + j - k, b =(( a ×( i + j )) × i ) × i. Then the square of the projection of a on b is:
Let $\displaystyle \overrightarrow{\mathrm{a}}=2 \hat{i}+\hat{j}-\hat{k}, \overrightarrow{\mathrm{~b}}=((\overrightarrow{\mathrm{a}} \times(\hat{i}+\hat{j})) \times \hat{i}) \times \hat{i}$. Then the square of the projection of $\displaystyle \overrightarrow{\mathrm{a}}$ on $\displaystyle \overrightarrow{\mathrm{b}}$ is :
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 2$
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JEE Main 2024 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.