Question

Assertion :Statement-I : If the initial and final positions coincide, the displacement is a null vector.
Because Reason: Statement-II : A physical quantity can not be called a vector, if its magnitude is zero.

• A. Statement-I is true, Statement-II is false.
• B. Statement-I is false, Statement-II is true.
• C. Statement-I is true, Statement-II is true ; Statement-II is correct explanation for Statement-I.
• D. Statement-I is true, Statement-II is true ; Statement-II is NOT a correct explanation for Statement-I.

Answer 1

The correct option is A Statement-I is true, Statement-II is false.

A null vector has zero magnitude and arbitrary direction. As initial and final final position coincide so its displacement will zero, so its a null vector.

Thus, option A is correct.