MEDIUM
JEE Main
IMPORTANT
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The shortest distance between the lines x+1=2 y=-12z and x=y+2=6z-6 is

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Important Questions on Three Dimensional Geometry

HARD
JEE Main
IMPORTANT
The foot of perpendicular of the point 2,0,5 on the line x+12=y-15=z+1-1 is α,β,γ. Then. Which of the following is NOT correct?
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JEE Main
IMPORTANT
If the shortest distance between the line joining the points 1,2,3 and 2,3,4, and the line x-12=y+1-1=z-20 is α, then 28α2 is equal to _____ .
MEDIUM
JEE Main
IMPORTANT

Let the co-ordinates of one vertex of ABC be A(0,2,α) and the other two vertices lie on the line x+α5=y-12=z+43. For α, if the area of ABC is 21 sq. units and the line segment BC has length 221 units, then α2 is equal to _______.

MEDIUM
JEE Main
IMPORTANT
Let the equation of the plane P containing the line x+10=8-y2=z be ax+by+3z=2(a+b) and the distance of the plane P from the point (1,27,7) be c. Then a2+b2+c2 is equal to
HARD
JEE Main
IMPORTANT
Shortest distance between the lines
x-12=y+8-7=z-45 and x-12=y-21=z-6-3 is 
HARD
JEE Main
IMPORTANT
The plane $2 x-y+z=4$ intersects the line segment joining the points $\mathrm{A}(\mathrm{a},-2,4)$ and $\mathrm{B}(2, \mathrm{~b},-3)$ at the point $\mathrm{C}$ in the ratio $2: 1$ and the distance of the point $\mathrm{C}$ from the origin is $\sqrt{5}$. If $a b<0$ and $\mathrm{P}$ is the point $(\mathrm{a}-\mathrm{b}, \mathrm{b}, 2 \mathrm{~b}-\mathrm{a})$ then $\mathrm{CP}^2$ is equal to:
HARD
JEE Main
IMPORTANT
If the lines x-11=y-22=z+31 and x-a2=y+23=z-31 intersects at the point P, then the distance of the point P from the plane z=a is : 
HARD
JEE Main
IMPORTANT
The line l1 passes through the point 2,6,2 and is perpendicular to the plane 2x+y-2z=10. Then the shortest distance between the line l1 and the line x+12=y+4-3=z2 is: