The equation 2x^2+4xy-py^2+4x+qy+1=0 wil...

The equation `2x^2+4xy-py^2+4x+qy+1=0` will represent two mutually
perpendicular straight lines , if

A

(a) `p=1` and `q=2` or 6

B

(b) `p=2` and `q=0` or 6

C

(c) `p=2` and `q=0` or 8

D

(d) `p=-2` and `q=-2` or 8

Verified by Experts

The correct Answer is:

C

NA

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