Kinematics Question 57
Question: Assertion : The minimum number of non coplanar vectors whose sum can be zero, it’s four. Reason : The resultant of two vectors of unequal magnitude can be zero.
Options:
A) If both assertion and reason are true and the reason is the correct explanation of the assertion.
B) If both assertion and reason are true but reason is not the correct explanation of the assertion.
C) If assertion is true but reason is false.
D) If the assertion and reason both are false.
Show Answer
Answer:
Correct Answer: C
Solution:
The resultant of two vectors of unequal magnitude given by
$ R=\sqrt{A^{2}+B^{2}+2AB\cos \theta } $ cannot be zero for any value of q.
