CBSE 12th Standard Maths Subject Three Dimensional Geometry Ncert Exemplar MCQ Questions 2021
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CBSE 12th Standard Maths Subject Three Dimensional Geometry Ncert Exemplar MCQ Questions 2021
12th Standard CBSE
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Reg.No. :
Maths
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The distance of the plane \(\vec{r}\left(\frac{2}{7} \hat{i}+\frac{3}{7} \hat{j}-\frac{6}{7} \hat{k}\right)=1\) from the origin is
(a)1
(b)7
(c)\(\frac{1}{7}\)
(d)None of these
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The locus represented by xy + yz = 0 is
(a)a pair of perpendicular lines
(b)a pair of parallel lines
(c)a pair of parallel planes
(d)a pair of perpendicular planes
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If the plane \(2 x-3 y+6 z-11=0\) makes an angle \(\sin ^{-1} \alpha\) with X-axis, then the value of \(\alpha\) is
(a)\(\frac{\sqrt{3}}{2}\)
(b)\(\frac{\sqrt{2}}{3}\)
(c)\(\frac{2}{7}\)
(d)\(\frac{3}{7}\)
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The equation of X -axis in space is
(a)x = 0, y = 0
(b)x = 0, z = 0
(c)x = 0
(d)y = 0, z = 0
1 Marks
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CBSE 12th Standard Maths Subject Three Dimensional Geometry Ncert Exemplar MCQ Questions 2021 Answer Keys
-
(a)
1
-
(d)
a pair of perpendicular planes
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(c)
\(\frac{2}{7}\)
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(d)
y = 0, z = 0
1 Marks
