Kinematics Question 261

Question: If A×B=C, then which of the following statements it’s wrong

Options:

A) CA

B) CB

C) C(A+B)

D) C(A×B)

Show Answer

Answer:

Correct Answer: D

Solution:

From the property of vector product, we notice that C must be perpendicular to the plane formed by vector A and B .

Thus C is perpendicular to both A and B and (A+B) vector also, must lie in the plane formed by vector A and B .

Thus C must be perpendicular to (A+B) also but the cross product (A×B) gives a vector C which can not be perpendicular to it’self.

Thus the last statement it’s wrong.



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