Question:
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 point $(1, 2, 2)$ from this plane is ________ units.
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 point $(1, 2, 2)$ from this plane is ________ units.
Show Hint
Cross product of normals gives required plane normal.
Updated On: Apr 26, 2026
- 1
- $\sqrt{2}$
- $2\sqrt{2}$
- $\sqrt{3}$
Show Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Plane perpendicular to two planes â normal is cross product of normals. Step 1: Normals. \[ (2,-2,1), (1,-1,2) \]
Step 2: Cross product. \[ = (-3,-3,0) \]
Step 3: Equation of plane. \[ -3(x-1)-3(y+2)=0 \]
Step 4: Distance. \[ d = \sqrt{2} \] Conclusion. Distance = $\sqrt{2}$
Plane perpendicular to two planes â normal is cross product of normals. Step 1: Normals. \[ (2,-2,1), (1,-1,2) \]
Step 2: Cross product. \[ = (-3,-3,0) \]
Step 3: Equation of plane. \[ -3(x-1)-3(y+2)=0 \]
Step 4: Distance. \[ d = \sqrt{2} \] Conclusion. Distance = $\sqrt{2}$
Was this answer helpful?
0
0
Top MHT CET Mathematics Questions
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- If $\int\frac{f\left(x\right)}{log \left(sin\,x\right)}dx = log\left[log\,sin\,x\right]+c$ then $f\left(x\right)=$
- If $\int\limits^{K}_0 \frac{dx}{2 + 18 x^2} = \frac{\pi}{24}$, then the value of K is
- If $\int^{\pi/2}_{0} \log\cos x dx =\frac{\pi}{2} \log\left(\frac{1}{2}\right)$ then $ \int^{\pi/2}_{0} \log\sec x dx = $
- The point on the curve $y = \sqrt{x - 1}$ where the tangent is perpendicular to the line $2x + y - 5 = 0 $ is
View More Questions
Top MHT CET Relations and Functions Questions
- Given \(A = \{1,2,3,4,5\}\), \(B = \{1,4,5\}\). If \(R\) is a relation from \(A\) to \(B\) such that \((x,y) \in R\) with \(x>y\), then the range of \(R\) is
- If the function \[ f(x)= \begin{cases} \dfrac{\log 10 + \log(0.1+2x)}{2x}, & x \neq 0 \\ k, & x=0 \end{cases} \] is continuous at \(x=0\), then \(k+2=\)
- If \( f(x) = \frac{3x+4}{5x-7} \), \( x \neq \frac{7}{5} \), and \( g(x) = \frac{7x+4}{5x-3} \), \( x \neq \frac{3}{5} \), then \[ (g \circ f)(3) = \]
- The function \( f(x) = \log x - \frac{2x}{x+2} \) is increasing for all:
- If \( f(x) = \frac{|x - 2|}{x - 2} \) for \( x \neq 2 \), and \( f(x) = 1 \) for \( x = 2 \), then which of the following statements is true?
View More Questions
Top MHT CET Questions
- During r- DNA technology, which one of the following enzymes is used for cleaving DNA molecule ?
- In non uniform circular motion, the ratio of tangential to radial acceleration is (r = radius of circle, $v =$ speed of the particle, $\alpha =$ angular acceleration)
- The temperature of $32^{\circ}C$ is equivalent to
- The line $5x + y - 1 = 0$ coincides with one of the lines given by $5x^2 + xy - kx - 2y + 2 = 0 $ then the value of k is
- The heat of formation of water is $ 260\, kJ $ . How much $ H_2O $ is decomposed by $ 130\, kJ $ of heat ?
View More Questions