Q . A LINE HAS INTERCEPTS “a” AND “b” ON THR

COORDINATE AXES. IF KEEPING THE ORIGIN FIXED , THE COORDINATE AXES ARE ROTATED THROUGH 90⁰ , THE SAME LINE HAS INTERCEPTS “p” AND “q” , THEN

1. p=a , q=b
2. p=b, q= a
3. p= – b , q = – a
4. p = b , q = – a

What’s wrong with this question?
See, you might have been confused about in what manner are the axes rotated whether clockwise or anticlockwise, but the options are eliminating the doubt. Try to just visualize what will be happening if the axes are rotated.
The answers are, if rotated in anti-clockwise manner:- p=b and q=-a
and if rotated in clockwise manner:- p=-b and q=a.
I hope the question is clear now.