31
MCQ (Single Correct Answer)
The locus of a point for which $x=0$ is
A
$X Y$-plane
B
$YZ$-plane
C
$Z X$-plane
D
None of these
32
MCQ (Single Correct Answer)
If a parallelopiped is formed by planes drawn through the points $(5,8,10)$ and $(3,6,8)$ parallel to the coordinate planes, then the length of diagonal of the parallelopiped is
A
$2 \sqrt{3}$
B
$3 \sqrt{2}$
C
$\sqrt{2}$
D
$\sqrt{3}$
33
MCQ (Single Correct Answer)
$L$ is the foot of the perpendicular drawn from a point $P(3,4,5)$ on the $X Y$-plane. The coordinates of point $L$ are
A
$(3,0,0)$
B
$(0,4,5)$
C
$(3,0,5)$
D
None of these
34
MCQ (Single Correct Answer)
$L$ is the foot of the perpendicular drawn from a point $(3,4,5)$ on $X$-axis. The coordinates of $L$ are
A
$(3,0,0)$
B
$(0,4,0)$
C
$(0,0,5)$
D
None of these
35
The three axes $O X, O Y$ and $O Z$ determine ............ .
Explanation
The three axes $O X, O Y$ and $O Z$ determine three coordinates planes.
