6th and 7th
Q.6. The resultant of three vectors of magnitudes 1, 2 and 3 units and whose directions are along the sides of an equilateral triangle taken in the same order is :
(A) 1 unit
(B) $\sqrt{6}$ units
(C) $\sqrt{3}$ units
(D) $\sqrt{14}$ units
Q.7. In the above equation the resultant vector makes an angle of :
(A) 210$°$ with the first vector
(B) 30$°$ with the first vector
(C) 60$°$ with the first vector
(D) 120$°$ with the second vector