Explore topic-wise MCQs in Mathematics Questions and Answers.

This section includes 3 Mcqs, each offering curated multiple-choice questions to sharpen your Mathematics Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.

1.

If l, m, n are the direction cosines of a position vector \(\vec{a}\), then which of the following is true?

A. l2+m2-n2=0
B. lmn=1
C. l2+m2+n2=1
D. l2 m2+n2=1
Answer» D. l2 m2+n2=1
Discussion
2.

For a given vector A, |\(\vec{A}\)| can be less than zero.

A. True
B. False
Answer» C.
Discussion
3.

Which of the following is used to represent the magnitude of vector \(\vec{A}\)?

A. \(\hat{A}\)
B. |\(\vec{A}\)|
C. \(\underset{A}{\leftrightarrow}\)
D. \(\vec{A}\)
Answer» C. \(\underset{A}{\leftrightarrow}\)
Discussion