Chapter 7: Vectors
MCQ's with answers from chapter 7 Vectors Mathematics book 2 for FSC pre engineering for Board of Intermediate and Secondary education. Also For Entry Test Preparation for UET, NUST, PIEAS, GIKI, AIR, FAST, WAH University, other engineering Universities.
Chapter 7. Vectors
1) The
triangle law for vector addition is equivalent to the
A)
Commutative law
B)
Associative law
C)
Parallelogram law
D)
First law
Answer: C
3) If
Cosa,
Cosb,
Cosc
are the directions Cosines of a vector then
A)
Cosa + Cosb + Cos c = 1
B)
Cos2a + Cos2b +
Cos2 c
= 0
C)
Cos2a + Cos2b +
Cos2 c
= 1
D)
Cosa + Cosb + Cos c = 0
Answer: C
4) The
numbers proportional to the direction cosines of a vector are called
A)
Vector numbers
B)
Scalar numbers
C)
Direction numbers
D)
Rational numbers
Answer: C
5) Two
or more vectors are said to be collinear if they are
A)
perpendicular to the same line
B)
parallel to the same line
C)
intersecting the same line
D)
not parallel to the same line
Answer: B
6) Two
or more vectors are said to be coplanar if they
A)
are perpendicular to the same plane
B)
are not parallel to the same plane
C)
lie in the same plane
D)
do not lie in the same plane
Answer: C
10) The join of the mid points of the
consecutive sides of any quadrilateral is
A)
a square
B)
a rectangle
C)
a parallelogram
D)
none of these
Answer: C
6) If the right bisectors of the two
sides of a triangle pass through the origin then the right bisector of the
third side will pass through the point
A)
(1, 1)
B)
(1, 2)
C)
(1, 3)
D)
(0, 0)
Answer: D
7) The equation 2x + 3y + 6z = 35
represents
A)
a line
B)
a circle
C)
a plane
D)
a parabola
Answer: C
9) the equation
(x – 1)2 + (y – 3)2
+ (z – 5)2 = 25 represents
A)
a circle
B)
a sphere
C)
a plane
D)
an ellipse
Answer: B
10) The coordinates of the center of the
sphere x2 + y2 + z2 = 9 is
A)
(0, 0)
B)
(3, 3, 0)
C)
(0, 0, 0)
D)
(0, 0, 3)
Answer: C
12) The distance from the origin to the
plane
A)
7
B)
0
C)
1
D)
2
Answer: C
13) The contact in which the point
coordinates are all positive is called
A)
1st octant
B)
2nd octant
C)
4th octant
D)
8th octant
Answer: A
14) The point (3, 5, 8) lies in the
A)
3rd octant
B)
5th octant
C)
8th octant
D)
1st octant
Answer: D
15) The three coordinate’s planes divide
all space into
A)
3 cells
B)
4 cells
C)
8 cells
D)
6 cells
Answer: C
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