Physics-Scalar & Vector Products
NEET Physics Scalar & Vector Products MCQ Question
Type: MCQ-numerical-Easy-Class 11
If two vectors A and B have magnitudes of 5 units and 10 units respectively, and the angle between them is 60°, what is the magnitude of their resultant vector R?
A
11.2 units
B
12.0 units
C
13.5 units
D
15.0 units
Correct Answer
Option A
Detailed Explanation
Using the formula for the magnitude of the resultant vector, R = √(A² + B² + 2AB cos θ), and substituting A = 5, B = 10, and cos 60° = 0.5, we get R = √(5² + 10² + 2510*0.5) = 11.2 units.
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