21No takers? [2]
PRETTY EASY ONE......
BUT I HAV MY DOUBTS WID DA ANSWERS GIVEN...........
PL. POST UR ANSWERS............
Answers as given in da papaer are : [DCB]
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10 Answers
1Here is the solution of 41 ... C
Note 1st equation is of Bi
2nd eq. is of Ai ... and the third equation is based on the given condition ... enjoy ..
1and yaar 42 toh bahut aasaan hai ...
at t=0 .. vel of A is u and vel of b is -u .. relative velocity of A wrt B is u - (- u) = 2u
21YO!!!
41 .... I got it.....
42 ya easy hai.....
40 ME to gettin A coz at f its max = 2∞ fir to decrease he hone wala hai
1for d first one, ans is D
when A moves from pole to focus, it's image moves from pole to -∞ ... where as, when B moves from centre to focus, it's image moves from centre to +∞ ... it suddenly shifts to -∞ juzz at d point when B touches d focus...
As d question is related to d situation before A&B come in contact... the distance b/w images always increases... as soon as they come in contact at focus, their images coincide (hypothetically at -∞)...