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![[Post New]](/templates/default/images/icon_minipost_new.gif) 11 Sep 2008 15:39:41 IST
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23. A ray of light coming along the line y=4 strikes the parabola y2=4x on the side of concave surface at a point A. After reflection, the ray again strikes the parabola at point B. The co-ordinates of point B is
A) (1.-1)
B) (1/4,-1)
C) (1/4,-1/4)
D) (1/2,-1/2)
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iitaspirant001@yahoo.com |
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25 Sep 2008 22:24:14 IST
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iitaspirant001@yahoo.com |
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25 Sep 2008 22:28:10 IST
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answer is definately B
SINCE IT IS THE ONLY POINT SATISFYING PARABOLA..........NO NEED TO SOLVE
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25 Sep 2008 22:33:23 IST
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yes!!!!!!!...
totally agreed !
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