R D Sharma Solutions for Chapter: Introduction to Three Dimensional Coordinate Geometry, Exercise 5: MULTIPLE CHOICE QUESTIONS (MCQs)

The ratio in which the line joining $(2, 4,5)$ and $( 3,5 ,-9)$ is divided by the $yz$-plane is

The ratio in which the line joining the points $(a,b,c)$ and $(-a,-c,-b)$ is divided by the $xy$ -plane is

If $P(0,1,2), Q(4,-2,1)$ and $O(0,0,0)$ are three points, then $\angle POQ=$

If the extremities of the diagonal of a square are $(1,-2,3)$ and $(2,-3,5)$, then the length of the side is

The points $(5,-4,2),(4,-3,1),(7,6,4)$ and $(8,-7,5)$ are the vertices of

In a three dimensional space the equation $x^2-5x+6=0$ represents

The perpendicular distance of the point $P(3, 3, 4)$ from the $x$ -axis is

The length of the perpendicular drawn from the point $P(a, b, c)$ from $z$ -axis is