Question

1. Two vectors a and b lie in one plane and c lies in different plane (other than parallel plane). Then. ( )

a) a+b+c not equal to zero
b) a+b can be zero
c) b+c can't be zero
d) all the above

2. If three vectors are represented as the three sides of a triangle taken in the same order, the resultant is [ ]
a) 0
b) 1
c) infinite
d) depends on situation

3. The displacement of a seconds hand of a clock of length 7 cm in 15 seconds is ( )

a) 7 cm
b) 7√2 cm
c) 14 cm
d) 21 cm

4. The magnitude of the resultant of two equal vectors is equal to the magnitude of one of the
vectors if the angle between the two vectors is
a) θ = 0°.
b) θ = 30°. [ ]
c) θ = 60°
d) θ =1200

5. The magnitude of resultant of three unit vectors can't be
a) 0
b) 1. [ ]
c) 3
d) 4

6. Minimum number of unequal vectors required in a plane so that the resultant is zero is [ ]
a) 2
b) 3
c) 4
d) 5

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Answer 1

Answer:

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