Home
Class 12
MATHS
If the planes x + 2y + kz = 0 and 2x+y -...

If the planes x + 2y + kz = 0 and 2x+y - 2z = 0 are at rt. angles, then the value of k is:

A

`-1//2`

B

`1//2`

C

`-2`

D

`2`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THREE DIMENSIONAL GEOMETRY

    MODERN PUBLICATION|Exercise AIEEE/JEE Examination|16 Videos

  • THREE DIMENSIONAL GEOMETRY

    MODERN PUBLICATION|Exercise Recent Competitive Questions (RCQs)|10 Videos

  • STATISTICS

    MODERN PUBLICATION|Exercise QUESTION FROM KARNATAKA CET & COMED|3 Videos

  • TRIGONOMETRIC RATIOS, IDENTITIES AND EQUATIONS

    MODERN PUBLICATION|Exercise RECENT COMPETITIVE QUESTIONS|12 Videos

Similar Questions

Explore conceptually related problems

If the system of equation : x + y + z = 0 , 2 x + 3y + 4z = 0 , kx + y - z = 0 has a non - zero solution , then the value of k is

A plane passes through (1, - 2, 1) and is perpendicular to the planes 2x - 2y +z = 0 and x-y + 2z = 4. The distance of the plane from the point (1, 2, 2) is:

If the lines 2x+y-3=0,5k+ky-3=0 and 3x-y-2=0 are concurrent ,find the value of K ?

The planes 2x-y+4 z=5 and 5x-2.5y+10z=6 are

If x^(2)-k x y-y^(2)+2 y+2=0 represents a pair of lines than the value of k is

The angle between the planes: 3x - 4y + 5z = 0 and 2x-y-2z = 5 is:

The angle between the two planes 3x- 4y + 5z = 0 and 2x-y - 2z = 5 is :

The plane x- 2y +z-6 = 0 and the line x/1=y/2=z/3 are related as:

If the straight line 3x + 4y = k touches the circle x^2+y^2-10x = 0, then the value of k is:

For the circles x^2 + y^2 - 2x + 3y + k = 0 and x^2 + y^2 + 8x - 6y - 7 = 0 to cut each other orthogonally the value of k must be