Question

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: If dot product and cross product of $\vec{A}\;and\;\vec{B}$are zero, it implies that one of the vector $\vec{A}\;and\;\vec{B}$ must be null vector
Reason R: Null vector is a vector with a zero magnitude.
In the light of the above statements, choose the correct answer from the options given below:

• 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

Answer 1

Answer: (B)

Both A and R are true but R is not the correct explanation of A

Answer 2

The correct answer is(B): Both A and R are true but R is not the correct explanation of A