Q. 10

It is found that |A+B|=|A|. This necessarily implies,
A. B = 0

B. A, B are antiparallel

C. A, B are perpendicular

D. A.B ≤ 0

Answer :

We have to identity statements which are always true. It is given that , it could be true in two conditions that is either , which means option (a) and (b) might true.


For forming a single condition we will multiply them, as either one of them is true it will uphold the necessary condition


We know (from previous equations)


Therefore their magnitude’s product will also be zero.


(This will always be true)



Therefore,


(Equality is true for B=0)


Above condition is always true

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Motion in a Plane - 04Motion in a Plane - 04Motion in a Plane - 0460 mins
Motion in a Plane - 02Motion in a Plane - 02Motion in a Plane - 0264 mins
Motion in a Plane - 03Motion in a Plane - 03Motion in a Plane - 0355 mins
Motion in a Plane - 01Motion in a Plane - 01Motion in a Plane - 0157 mins
Motion in a Straight Line - 03Motion in a Straight Line - 03Motion in a Straight Line - 0372 mins
Motion in a Straight Line - 06Motion in a Straight Line - 06Motion in a Straight Line - 0665 mins
Motion in a Straight Line - 05Motion in a Straight Line - 05Motion in a Straight Line - 0556 mins
Motion in a Straight Line - 02Motion in a Straight Line - 02Motion in a Straight Line - 0261 mins
Motion in a Straight Line - 01Motion in a Straight Line - 01Motion in a Straight Line - 0152 mins
Motion in a Straight Line - 04Motion in a Straight Line - 04Motion in a Straight Line - 0459 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :