Question

two vectors A & B are such that A+B=A-B. Then select the incorrect option:
1) A.B=0
2) A×B=0
3) A=0
4) B=0

[Hint: Answer is (3)]​

Answer 1

Answer:

3) A=0

A+B=A-B

=> 2B = 0

=> B = 0

there for A not is equal to 0