Question

12. The position vector of a particle in three dimension given by r = az i+ay j +a, k. The magnitude of the
position vector is given by
(a) (az? + ay? + a22)^1/2 (b) (ax? - ay? - a23) ^1/2 (c) (ax + ay + az) 1/2 (d) (ax? + ay? + a22)
For the questions 13, 14 and 15 choose the answers from the options given below:
(a) Assertion is correct and reason is incorrect
(b) Assertion is incorrect and reason is correct
(c) both are correct
(d) Both are incorrect​

Answer 1

Answer:

The cross product of two vectors does not obey commutative law. ... The cross product of two vectors are additive inverse of each other. The cross product can be given by the formula a×b sinθn. Here, the direction of cross product is given by the right hand rule.