31. |
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Answer:
Option (b) |
32. |
Angle between the two diagonals of cube is _____
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Answer:
Option (d) |
33. |
The two lines x = ay + b, z = cy + d and x = a' y + b', z = c' y + d will be perpendicular, if and only if
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Answer:
Option (c) |
34. |
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Answer:
Option (b) |
35. |
A tetrahedron has vertices at O(0,0,0), A(1,2,1), B(2,1,3) and C(-1,1,2). Then the angle between the faces OAB and ABC will be
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Answer:
Option (a) |
36. |
Two system of retangular axes have the same origin. If a plane cuts them at distances a, b, c and a', b', c' from the origin then.
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Answer:
Option (a) |
37. |
A line with direction cosines proportional to 2,1,2 meets each of the lines x = y + a = z and x + a = 2y = 2z. The co-ordinates of each of the points of intersection are given by
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Answer:
Option (b) |
38. |
The image of the point (-1,3,4) in the plane x - 2y = 0 is
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Answer:
Option (d) |
39. |
If a line makes an angle of with the positive directions of each of X - axis and Y - axis, then the angle that the line makes with the positive direction of the Z - axis is
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Answer:
Option (b) |
40. |
The line passing through the points (5,1,a) and (3,b,1) crosses the yz - plane at the point.. Then
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Answer:
Option (d) |