Question:
If \(\overrightarrow{a}=\hat{i}+\lambda\hat{j}-2\hat{k}, \overrightarrow{b}=2\hat{i}-3\hat{j}+5\hat{k}\ and\ \overrightarrow{a}\cdot\overrightarrow{b}=-20\), then the value of \(\lambda\) is equal to
If \(\overrightarrow{a}=\hat{i}+\lambda\hat{j}-2\hat{k}, \overrightarrow{b}=2\hat{i}-3\hat{j}+5\hat{k}\ and\ \overrightarrow{a}\cdot\overrightarrow{b}=-20\), then the value of \(\lambda\) is equal to
Updated On: Jun 10, 2024
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The Correct Option is D
Solution and Explanation
The correct option is (D): 4
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