CBSE Class 12 Three Dimensional Geometry Multiple Choice Questions with Answers. MCQ Questions Class 12 Three Dimensional Geometry with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Three Dimensional Geometry with Answers to know their preparation level.
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MCQ Questions Class 12 Three Dimensional Geometry with Answers - Set - 4
Question 1:
The equation xy = 0 in three dimensional space is represented by
(a) a plane
(b) two plane are right angles
(c) a pair of parallel planes
(d) a pair of st. line
Correct Answer – (B)
Question 2:
(2, – 3, – 1) 2x – 3y + 6z + 7 = 0
(a) 4
(b) 3
(c) 2
(d) 15
Correct Answer – (C)
Question 3:
The direction cosines of the normal to the plane 2x – 3y – 6z – 3 = 0 are
(a) 2/7, −3/7, −6/7
(b) 2/7, 3/7, 6/7
(c) −2/7, −3/7, −6/7
(d) None of these
Correct Answer – (A)
Question 4:
If the planes a1x + b, y + c, z + d1 = 0 and a2x + b, y + c2z + d2 = 0 are perpendicular to each other then
(a) a1/a2 = b1/b2 = c1/c2
(b) a1/a2 + b1/b2 + c1/c2
(c) a1/a2 + b1/b2 + c1/c2 = 0
(d) (a1)2/(a2)2+ (b1)2/(b2)2 + (c1)2/(c2)2 = 0
Correct Answer – (C)
Question 5:
The direction ratios of the line joining the points (x, y, z) and (x2, y2, z1) are
(a) x1 + x2, y1 + y2, z1 + z2
(b) 
(c) 
(d) x2 – x1, y2 – y1, z2 – z1
Correct Answer – (D)
MCQ Questions Class 12 Three Dimensional Geometry With Answers
Question 6:
The length of the ⊥er from the point (0, – 1, 3) to the plane 2x + y – 2z + 1 = 0 is
(a) 0
(b) 2√3
(c) 2/3
(d) 2
Correct Answer – (D)
Question 7:
If 2x + 5y – 6z + 3 = 0 be the equation of the plane, then the equation of any plane parallel to the given plane is
(a) 3x + 5y – 6z + 3 = 0
(b) 2x – 5y – 6z + 3 = 0
(c) 2x + 5y – 6z + k = 0
(d) None of these
Correct Answer – (C)
Question 8:
The distance of the plane 2x – 3y + 6z + 7 = 0 from the point (2, -3, -1) is
(a) 4
(b) 3
(c) 2
(d) 1/5
Correct Answer – (C)
Question 9:
The coordinates of the midpoints of the line segment joining the points (2, 3, 4) and (8, -3, 8) are
(a) (10, 0, 12)
(b) (5, 6, 0)
(c) (6, 5, 0)
(d) (5, 0, 6)
Correct Answer – (D)
Question 10:
The direction cosines of the y-axis are
(a) (6, 0, 0)
(b) (1, 0, 0)
(c) (0, 1, 0)
(d) (0, 0, 1)
Correct Answer – (C)
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