MHT CET202020 Oct 2020Evening ShiftPhysicsMathematics in PhysicsActual
A vector A having magnitude 6 units is added to vector B , which is along x -axis. The resultant of A and B is along Y axis. If the magnitude of the resultant of A and B is three times that of B then magnitude of B is
Options
- A1 8
- B2 4
- C3 6
- D1 2
Correct answer
C. 3 6
Step-by-step solution
[R]=[L],[P]=[L],[Q]=[L] Also, [ P²-Q² 2 ]= [L² ] R [ P²-Q² 2 ]= [L³ ]=[x]=[ volume ]