Q 1229156011.     The pair of lines represented by `3ax^2+5xy+(a^2-2)y^2=0` are perpendicular to each other for

A

two value of a

B

for one value of a

C

forall a

D

for no values of a

HINT

The line will be perpendicular then `m_1m_2 = -1 = a/b`

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