JEE 2023 Mathematics PYQ — If the equation of the plane that contains the point and is perpe… | Mathem Solvex | Mathem Solvex
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JEE 2023 — Mathematics PYQ
JEE | Mathematics | 2023
If the equation of the plane that contains the point (−2,3,5) and is perpendicular to each of the planes 2x+4y+5z=8 and 3x−2y+3z=5 is αx+βy+γz+97=0, then α+β+γ=?
Choose the correct answer:
A.
15
(Correct Answer)
B.
18
C.
17
D.
16
Correct Answer:
15
Explanation
1. Normal Vectors ko pehchanna:
Diye gaye do planes ke normal vectors (coefficients of x,y,z) niche diye gaye hain:
n1=2i^+4j^+5k^
n2=3i^−2j^+3k^
2. Naye plane ka Normal Vector (n) nikalna:
Kyunki hamara plane dono planes ke perpendicular hai, iska normal n dono n1 aur n2 ka cross product hoga: