Question

Assertion (A): A physical quantity cannot be called as a vector if its magnitude is zero
Reason (R) : A vector has both magnitude and direction
a) Both A and R are correct and R is the correct explanation of A
b) Both A and R are correct but R is not the correct explanation of A
c) A is correct, R is incorrect
d) A is incorrect, R is correct​

Answer 1

Answer:

(d)A is incorrect,R is correct

EXPLANATION it can be called as vector until it has magnitude and direction

here,the magnitude value is 0 so a null vector

Answer 2

Explanation:

option A is correct

A vector has both magnitude and direction plus it has to follow the law of vector addition in vectors there is a concept null vector i.e vector plus magnitude is equal to zero such vector represent a point in space