# The locus of a point which moves in such a way that the sum of the squares of its distances from six faces of a cube is constant is

1.  Sphere

2.  Circle

3.  Plane

4.  Ellipse

4

Sphere

Explanation :
No Explanation available for this question

# The Locus of x2+y2+z2=0 represents

1.  A circle

2.  A straight line

3.  (0,0,0)

4.  Plane

4

(0,0,0)

Explanation :
No Explanation available for this question

# Number of spheres drawn through the points(0,0,0),(1,0,0),(0,1,0),(1,1,0) are

1.  0

2.  5

3.  Infiinite

4.  2

4

Infiinite

Explanation :
No Explanation available for this question

# Then the 7th term i

1.  84a3√a

2.  84a2√a

3.  84a2

4.  84a3

4

84a3√a

Explanation :
No Explanation available for this question

# The number of the common points of the line 5x+12y=4 and the circle x2+y2-6x+4y+12=0

1.  0

2.  2

3.  1

4.  3

4

1

Explanation :
No Explanation available for this question

# If radii of two circles are 4 and 3 and distance between centres is √37 then the angle between the circles is

1.  300

2.  450

3.  600

4.  900

4

600

Explanation :
No Explanation available for this question

1.  10C1

2.  5/12

3.  1

4.  32

4

5/12

Explanation :
No Explanation available for this question

# The number of the common tangents to the circles x2+y2+2x+8y-23=0, x2+y2-4x-10y+19=0

1.  4

2.  2

3.  3

4.  1

4

3

Explanation :
No Explanation available for this question

# The angle between the circles x2+y2-4x-6y-3=0 and x2+y2+8x-4y+11=0 is

1.  π/2

2.  π/4

3.  π/3

4.  π/12

4

π/3

Explanation :
No Explanation available for this question

1.  Obtuse

2.  π/6

3.  π/3

4.  π/2

4