Addition, subtraction and multiplication of scalars is done by:
Correct answer: B. Simple arithmetical rules
- A. Algebraic principles
- B. Simple arithmetical rules
- C. Logical methods
- D. Vector algebra
Explanation
Addition, subtraction, and multiplication of scalars are done using the ordinary arithmetic rules of real numbers. Scalars are simply single numbers (not vectors or matrices), so the operations are straightforward:Addition of scalars:a+bwhere a and b are scalars.Subtraction of scalars:a−bMultiplication of scalars:a×b or ab
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Vectors and Equilibrium
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
Practise Vectors and Equilibrium
431 free Vectors and Equilibrium MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Vectors and Equilibrium questions
The greatest and smallest resultant of two forces acting at a point is 10 N and 6 N respectively. If each force is increased by 3 N, find the magnitude of the new resultant forces when acting at a point while being perpendicular to each other:
If the angle between two forces increases, the magnitude of their resultant:
Displacement of sun with respect to earth is:
A unit vector is obtained by dividing the given vector by:
Vectors are added according to:
The resultant of two or more vectors is obtained by: