Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Vectors

Question:

The value of $\lambda$ when the projection of $\vec{a}=\lambda \hat{i}+\hat{j}+2 \sqrt{5} \hat{k}$ on $\vec{b}=2 \hat{i}+4 \hat{j}+\sqrt{5} \hat{k}$ is 6, is:

Options:

4

6

10

8

Correct Answer:

8

Explanation:

The correct answer is Option (4) → 8