Distance and Image of a Point from a Plane
Three Dimensional Geometry

121364 If the mirror image of the point \((2,4,7)\) in the plane \(3 x-y+4 z=2\) is \((a, b, c)\), the \(2 a+b+2 c\) is equal to :

1 54
2 50
3 -6
4 -42
Three Dimensional Geometry

121367 If the length of the perpendicular drawn from the point \(P(a, 4,2), a>0\) on the line \(\frac{x+1}{2}=\frac{y-3}{3}=\frac{z-1}{-1}\) is \(2 \sqrt{6}\) units and \(Q\left(\alpha_1, \alpha_2\right.\), \(\alpha_3\) ) is the image of the point \(P\) in this line, then \(a+\sum_{i=1}^3 \alpha_i\) is equal to :

1 7
2 8
3 12
4 14
Three Dimensional Geometry

121369 Let the plane containing the line of intersection of the planes
\(P_1: x+(\lambda+4) y+z=1\) and
\(P_2: \mathbf{2 x}+\mathbf{y}+\mathrm{z}=\mathbf{2}\) pass through the points \((0,1\), \(0)\) and \((1,0,1)\). Then the distance of the point ( \(2 \lambda, \lambda,-\lambda)\) from the plane \(P 2\) is

1 \(5 \sqrt{6}\)
2 \(2 \sqrt{6}\)
3 \(3 \sqrt{6}\)
4 \(4 \sqrt{6}\)
Three Dimensional Geometry

121372 The plane \(2 x-y+z=4\) intersects the line segment joining the points \(A(a,-2,4)\) and \(B(2\), \(b,-3)\) at the point \(C\) in the ratio \(2: 1\) and the distance of point \(C\) from the origin is \(\sqrt{5}\). If ab \(\lt 0\) and \(P\) is the point \((a-b, b, 2 b-a)\) then \(C^2\) is equal to

1 \(\frac{73}{3}\)
2 \(\frac{97}{3}\)
3 \(\frac{16}{3}\)
4 \(\frac{17}{3}\)
Three Dimensional Geometry

121364 If the mirror image of the point \((2,4,7)\) in the plane \(3 x-y+4 z=2\) is \((a, b, c)\), the \(2 a+b+2 c\) is equal to :

1 54
2 50
3 -6
4 -42
Three Dimensional Geometry

121367 If the length of the perpendicular drawn from the point \(P(a, 4,2), a>0\) on the line \(\frac{x+1}{2}=\frac{y-3}{3}=\frac{z-1}{-1}\) is \(2 \sqrt{6}\) units and \(Q\left(\alpha_1, \alpha_2\right.\), \(\alpha_3\) ) is the image of the point \(P\) in this line, then \(a+\sum_{i=1}^3 \alpha_i\) is equal to :

1 7
2 8
3 12
4 14
Three Dimensional Geometry

121369 Let the plane containing the line of intersection of the planes
\(P_1: x+(\lambda+4) y+z=1\) and
\(P_2: \mathbf{2 x}+\mathbf{y}+\mathrm{z}=\mathbf{2}\) pass through the points \((0,1\), \(0)\) and \((1,0,1)\). Then the distance of the point ( \(2 \lambda, \lambda,-\lambda)\) from the plane \(P 2\) is

1 \(5 \sqrt{6}\)
2 \(2 \sqrt{6}\)
3 \(3 \sqrt{6}\)
4 \(4 \sqrt{6}\)
Three Dimensional Geometry

121372 The plane \(2 x-y+z=4\) intersects the line segment joining the points \(A(a,-2,4)\) and \(B(2\), \(b,-3)\) at the point \(C\) in the ratio \(2: 1\) and the distance of point \(C\) from the origin is \(\sqrt{5}\). If ab \(\lt 0\) and \(P\) is the point \((a-b, b, 2 b-a)\) then \(C^2\) is equal to

1 \(\frac{73}{3}\)
2 \(\frac{97}{3}\)
3 \(\frac{16}{3}\)
4 \(\frac{17}{3}\)
Three Dimensional Geometry

121364 If the mirror image of the point \((2,4,7)\) in the plane \(3 x-y+4 z=2\) is \((a, b, c)\), the \(2 a+b+2 c\) is equal to :

1 54
2 50
3 -6
4 -42
Three Dimensional Geometry

121367 If the length of the perpendicular drawn from the point \(P(a, 4,2), a>0\) on the line \(\frac{x+1}{2}=\frac{y-3}{3}=\frac{z-1}{-1}\) is \(2 \sqrt{6}\) units and \(Q\left(\alpha_1, \alpha_2\right.\), \(\alpha_3\) ) is the image of the point \(P\) in this line, then \(a+\sum_{i=1}^3 \alpha_i\) is equal to :

1 7
2 8
3 12
4 14
Three Dimensional Geometry

121369 Let the plane containing the line of intersection of the planes
\(P_1: x+(\lambda+4) y+z=1\) and
\(P_2: \mathbf{2 x}+\mathbf{y}+\mathrm{z}=\mathbf{2}\) pass through the points \((0,1\), \(0)\) and \((1,0,1)\). Then the distance of the point ( \(2 \lambda, \lambda,-\lambda)\) from the plane \(P 2\) is

1 \(5 \sqrt{6}\)
2 \(2 \sqrt{6}\)
3 \(3 \sqrt{6}\)
4 \(4 \sqrt{6}\)
Three Dimensional Geometry

121372 The plane \(2 x-y+z=4\) intersects the line segment joining the points \(A(a,-2,4)\) and \(B(2\), \(b,-3)\) at the point \(C\) in the ratio \(2: 1\) and the distance of point \(C\) from the origin is \(\sqrt{5}\). If ab \(\lt 0\) and \(P\) is the point \((a-b, b, 2 b-a)\) then \(C^2\) is equal to

1 \(\frac{73}{3}\)
2 \(\frac{97}{3}\)
3 \(\frac{16}{3}\)
4 \(\frac{17}{3}\)
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Three Dimensional Geometry

121364 If the mirror image of the point \((2,4,7)\) in the plane \(3 x-y+4 z=2\) is \((a, b, c)\), the \(2 a+b+2 c\) is equal to :

1 54
2 50
3 -6
4 -42
Three Dimensional Geometry

121367 If the length of the perpendicular drawn from the point \(P(a, 4,2), a>0\) on the line \(\frac{x+1}{2}=\frac{y-3}{3}=\frac{z-1}{-1}\) is \(2 \sqrt{6}\) units and \(Q\left(\alpha_1, \alpha_2\right.\), \(\alpha_3\) ) is the image of the point \(P\) in this line, then \(a+\sum_{i=1}^3 \alpha_i\) is equal to :

1 7
2 8
3 12
4 14
Three Dimensional Geometry

121369 Let the plane containing the line of intersection of the planes
\(P_1: x+(\lambda+4) y+z=1\) and
\(P_2: \mathbf{2 x}+\mathbf{y}+\mathrm{z}=\mathbf{2}\) pass through the points \((0,1\), \(0)\) and \((1,0,1)\). Then the distance of the point ( \(2 \lambda, \lambda,-\lambda)\) from the plane \(P 2\) is

1 \(5 \sqrt{6}\)
2 \(2 \sqrt{6}\)
3 \(3 \sqrt{6}\)
4 \(4 \sqrt{6}\)
Three Dimensional Geometry

121372 The plane \(2 x-y+z=4\) intersects the line segment joining the points \(A(a,-2,4)\) and \(B(2\), \(b,-3)\) at the point \(C\) in the ratio \(2: 1\) and the distance of point \(C\) from the origin is \(\sqrt{5}\). If ab \(\lt 0\) and \(P\) is the point \((a-b, b, 2 b-a)\) then \(C^2\) is equal to

1 \(\frac{73}{3}\)
2 \(\frac{97}{3}\)
3 \(\frac{16}{3}\)
4 \(\frac{17}{3}\)