Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-conceptual-Hard-Class 11
Which of the following statements about the scalar product of vectors is correct?
A
The scalar product of two vectors is always zero if the vectors are perpendicular.
B
The scalar product of two vectors can be a negative value if the angle between them is greater than 90 degrees.
C
The scalar product of two vectors results in a vector quantity.
D
The scalar product of two vectors is independent of the angle between them.
Correct Answer
Option A
Detailed Explanation
The scalar product of two vectors A and B is defined as A . B = |A| |B| cos θ, where θ is the angle between them. This means that if A and B are perpendicular, θ = 90°, making cos θ = 0, which results in a scalar product of zero.
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