Question

5.
The resultant of A and B makes an angle a with
A and B with B then
(A) a<ß (B) a <ß if A<B
(©) a<ß if A>B (D) a <ß if A=B​

Answer 1

answer : option (c)

explanation : The resultant of A and B makes an angle α with A and B with β.

concept : resultant always make lower angle with vector of higher magnitude.

I mean, if two vectors P and Q are given in such a way that |P| > |Q| then angle made by resultant of P and Q with P is lower than angle made by resultant of P and Q with Q.

and also , if the magnitude of P and Q are same then angle between resultant and P is equal to angle between resultant and Q.

here if A > B, then α < β

and if A < B, then α > β

so, option (C) is correct choice.