0
π/2
π/4
π
Given that and makes angle α and β with and respectively, then which of the following is correct
α cannot be less than β
α < β if P < Q
α < β if P > Q
α < β if P = Q
Two quantities A and B have different dimensions. Which mathematical operation given below is physically meaningful?
A/B
A + B
A - B
None
The angle between the two vectors will be
0o
45o
90o
180o
The vectors satisfy then,
is perpendicular to both and
and are essential products
is parallel to both and
The magnitudes of vectors are 3, 4 and 5 units respectively. If , the angle between is
cos-1 (0.6)
tan-1(7/5)
Minimum number of unequal vectors which can give zero resultant are:
Two
Three
Four
More than four
(A2 + B2 + AB)1/2
(A2 + B2 + AB/√3)1/2
(A2 + B2 + √3 AB) 1/2
A rod of length PQ = l leans by its upper end against a smooth vertical wall while its end leans against the base. The end Q of the rod moves uniformly downward with speed v1. The end P will move on the floor with velocity v2 such that :
v2 is uniform and v2 = v1
v2 is uniform but v2 ≠ v1
v2 continuously increases
v2 continuously decreases
