Q-17 Mutually petpendicular vectors 'ilich have 'he original vector as their resultant (C) Arbitrary vectors which have the original vector as their resultant (D) It is not possible to resolve a vector Q-15 Angular momentum is (A' A scalar (B) A polar vector (C) An axial vector (D) None of these o Q-16 If a vector p making angles q, ß, sin: sin2ß + sin2 -17 Consider vectors F: = 5i and 7 respectively with the Y and Z axes respectively. Then o and = 3i + 4É. The magnitude of the scalar product of these vectors is (A) 20 (B) 23 (C) 50S CHAMPIONS ACADEMY w ww .champions.ac.in ID) 26 o CHAMPIONS

Dear Student
   The two vectors are given as F1=2i+5kF2=3j+4kScalar product of two vectors are given as=F1.F2        =F1F2cosθ=(2i+5k).(3j+4k)=20units( because the dot product of vectors                                                                                    perpendicular to each other is Zero as cos900=0                                                                                 and for vectors making angle 00 than cos00=1)
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