What are the direction ratios of normal to the plane `2 - y + 2z + l = 0?`

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Q 2339845712.     What are the direction ratios of normal to the
plane `2 - y + 2z + l = 0?`
NDA 2012 Paper 1
A

`(: 2,1,2 :)`

B

` (: 1, -1/2 ,1 :)`

C

`(: 1,-2,1 :)`

D

None of these

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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