Optics - How to solve it???

1357

Manish Shankar ·2009-01-16 23:48:38

45Â°

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prateek punj ·2009-01-17 02:11:46

JUST GO THRU THEM...SRY NOT SO CLEAR... ANY DOUBTS ASK THEM...

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prateek punj ·2009-01-17 02:12:17

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prateek punj ·2009-01-17 02:12:39

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106

Asish Mahapatra ·2009-01-17 02:13:26

as it should retrace its path, first and 3rd reflection should take place at same position. i.e where it was initially incident. So, u just have to decide the posn where the 2nd reflection will take place such that it retraces its path.

Clearly it will retrace its path if it falls normally on the 2nd mirror. Now use simple geometry to get the answer as 45Â°

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106

Asish Mahapatra ·2009-01-17 02:15:16

prateek instead of solving it in such a lengthy manner u can use simple logic as written by me to easily arrive at the answer.

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prateek punj ·2009-01-17 02:15:29

that is not so...asish....
third can take place at any position....

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prateek punj ·2009-01-17 02:17:03

yaar....
i had the short method but i want eureka to be clear abt it.....
and that too image cann't be created here....
so i decided to write the whole ans....