CBSE Past Year MCQ Quiz

Question 1 of 3

CBSE Board Exam 2024

If \(\vec{a}=2 \hat{i}-\hat{j}+\hat{k}\) and \(\vec{b}=\hat{i}+\hat{j}-\hat{k}\), then \(\vec{a}\) and \(\vec{b}\) are:

A collinear vectors which are not parallel B parallel vectors C perpendicular vectors D unit vectors

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Question 2 of 3

CBSE Board Exam 2024

If \(|\overrightarrow{\mathrm{a}}|=2\) and \(-3 \leq \mathrm{k} \leq 2\), then \(|\mathrm{k} \overrightarrow{\mathrm{a}}| \in\) :

A \([-6,4]\) B \([0,4]\) C \([4,6]\) D \([0,6]\)

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Question 3 of 3

CBSE Board Exam 2025

If \(\vec{p}\) and \(\vec{q}\) are unit vectors, then which of the following values of \(\vec{p} \cdot \vec{q}\) is not possible?

A \(\frac{-1}{2}\) B \(\frac{1}{\sqrt{2}}\) C \(\frac{\sqrt{3}}{2}\) D \(\sqrt{3}\)

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Class 6