Three Dimensional Geometry  MCQs

MCQs of Three Dimensional Geometry

Showing 11 to 20 out of 39 Questions
11.
A symmetrical form of the line of intersection of the planes x = ay + b and z = cy + d is
(a) x-ba=y-11=z-dc 
(b) x-b-aa=y-11=z-d-cc 
(c) x-bb=y-01=z-cd 
(d) x-b-ab=y-10=z-d-cd 
Answer:

Option (b)

12.
If the line x-32=y+2-1=z+43  lies in the plane lx + my - z = 9 , then l2+m2 equal to
(a) 5
(b) 2
(c) 26
(d) 18
Answer:

Option (b)

13.
The shortest distance between the lines x2=y2=z1  and x+2-1=y-48=z-54  lies in the interval :
(a) (3,4]
(b) (2,3]
(c) [1,2)
(d) [0,1)
Answer:

Option (b)

14.
If the direction of the lines x - 1c = y + 2-2 = z - 34 and x - 51 = y - 31 = z + 1c are same,c = _____
(a) -2
(b) 2
(c) 0
(d) 4
Answer:

Option (a)

15.
The equation of the line parallel to the line x - 13 = 2 - y-5 = z -1015 and passing through (2, 3, 4) is _____.
(a) r¯=2+3k, 3+5k,4+15k, kR
(b) r¯=2-3k, 3-5k,4-15k, kR
(c) r¯=2+3k, 3-5k,4+15k, kR
(d) None of the above
Answer:

Option (a)

16.
Direction cosines of the line 2x-321=22-2y2, z+1=0 is_____
(a) 15, -25, 0
(b) -15, 15, 0
(c) 15, 0, 15
(d) 15, -15, 0
Answer:

Option (a)

17.
If the Lines x-1c=y-2-2=z+34 and x-12=y+2-1=z+12 have the same directions then c=_____
(a) 4
(b) 2
(c) -4
(d) -2
Answer:

Option (a)

18.
The equation of a line passing through (2, 3, 4) are parallel to the line x-13=y-25=z-1015 is_____
(a) r¯=(1, 2, 3) + k(2, 3, 4), kR
(b) r¯=(2, 3, 4) + k35, 1, 3, kR
(c) r¯=(2, 3, 4) + k1, 5, 3, kR
(d) r¯=(1, 2, 3) + k1, 2, 10, kR
Answer:

Option (b)

19.
Direction of the line x=1 + 2y, 3y=z - 1 is (2, 1, 3) then it passes through the point_____
(a) (1, 3, 1)
(b) (1, 3, 2)
(c) (2, 3, 1)
(d) (1, 0, 1)
Answer:

Option (d)

20.
Perpendicular distance between the lines x = y = z and x - 1 = y - 2 = z - 3 is_____
(a) 2
(b) 16
(c) 6
(d) 23
Answer:

Option (a)

Showing 11 to 20 out of 39 Questions