Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): The scalar product of two vectors is zero if the vectors are perpendicular to each other. | Reason (R): The dot product of two vectors depends on the cosine of the angle between them.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
The assertion is true because if two vectors are perpendicular, the angle between them is 90 degrees, making cos(90°) = 0, thus resulting in a zero scalar product. The reason correctly explains this by stating that the dot product depends on the cosine of the angle.
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