Assertion: The first derivative of a vector of constant magnitude (either zero or a nonzero) is perpendicular to the vector itself. Reason: Scalar product of two vectors obeys commutative law.

Question

Assertion: The first derivative of a vector of constant magnitude (either zero or a nonzero) is perpendicular to the vector itself. Reason: Scalar product of two vectors obeys commutative law. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Correct answer is (b) If both assertion and reason are true but reason is not the correct explanation of assertion

Q. Assertion : The first derivative of a vector of constant magnitude (either zero or a nonzero) is perpendicular to the vector itself. Reason : Scalar product of two vectors obeys commutative law.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Correct answer is (b) If both assertion and reason are true but reason is not the correct explanation of assertion

Q. Assertion : The first derivative of a vector of constant magnitude (either zero or a nonzero) is perpendicular to the vector itself.
Reason : Scalar product of two vectors obeys commutative law.