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Physics Class 11 - Chapter 2
Vectors And EquilibriumTest - 2
1.
If A=B which of the following is not correct?
a) AB=BA’
b) [A’]=[B’]
c) A.B=A’.B’
d) [A]=[B]
2.
When the resultant of two forces of equal magnitudes also equal to the magnitude of the forces then the angle between them?
a) 90
b) 60
c) 120
d) 30
3.
Two vector are 5i+2j-6k and -5i-2j+6k then which one is true?
a) B is negative of A
b) A is antiparallel to the B
c) All of these
d) A has negative magnitude
4.
Unit vector n is along?
a) normal on a surface
b) y-axis
c) x-axis
d) z-axis
5.
I’.(j’xk’) is equal to?
a) i’
b) j’
c) 1
d) k”
6.
Which one is correct about vector A=2i +2j?
a) Has magnitude 2
b) Has direction in angle 45 with x-axis
c) None of these
d) Has magnitude -2
7.
There can be maximum no. of rectangular components?
a) Three
b) One
c) Infinite
d) Two
8.
The angle made by the vector A=i +j?
a) 90
b) 30
c) 45
d) 60
9.
Addition of a vector obeys?
a) All of these
b) Associative law
c) Commutative law
d) Distributive law
10.
Maximum no. of components of a vector may be?
a) Three
b) Two
c) Infinite
d) One
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