Explore topic-wise MCQs in Physics.

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

1.

There are 6 vectors: a, b, c, d, e, f. Simply the following expression: [ a(b . c) X (e . f)d ] X [ a – d ].‘X’ represents cross product while ’.‘ represents dot product. Vectors a & d are perpendicular.

A. 0
B. (b . c)(e . f) [ d + a ]c) (b . c)(e . f) [ d – a ]d) (b .
C. X (e . f)d ] X [ a – d ].‘X’ represents cross product while ’.‘ represents dot product. Vectors a & d are perpendicular.a) 0b) (b . c)(e . f) [ d + a ]c) (b . c)(e . f) [ d – a ]
D. (b . c)(e . f) [ d X a ]
Answer» C. X (e . f)d ] X [ a – d ].‘X’ represents cross product while ’.‘ represents dot product. Vectors a & d are perpendicular.a) 0b) (b . c)(e . f) [ d + a ]c) (b . c)(e . f) [ d – a ]
Discussion
2.

Find the vector product (a X b) of the two given vectors: a = 2i + 3j + 4k, b = 3i + 5j. Here, i, j & k are unit vectors along three mutually perpendicular axes.

A. -20i + 12j + k
B. of the two given vectors: a = 2i + 3j + 4k, b = 3i + 5j. Here, i, j & k are unit vectors along three mutually perpendicular axes.a) -20i + 12j + kb) 10i + 6j + 1/2k
C. 20i – 12j – k
D. 10i – 6j -1/2k
Answer» B. of the two given vectors: a = 2i + 3j + 4k, b = 3i + 5j. Here, i, j & k are unit vectors along three mutually perpendicular axes.a) -20i + 12j + kb) 10i + 6j + 1/2k
Discussion
3.

Regarding the velocity of a particle in uniform circular motion about a fixed axis, select the correct option. w & r angular velocity and radius vectors respectively. ‘X’ & ‘ . ’ represent cross & dot products respectively.

A. v = r X w
B. v = w X r
C. v = w.r
D. w = v.r
Answer» C. v = w.r
Discussion