@ rishant
can you recall the following formula ??
lambda=1/z^2{(1/n1^2)-(1/n2^2)},
if u can then , u can surely , solve this question . "
BUT THIS QUESTION IS WRONG , SOME DATA GIVEN HERE IS WRONG .
LET ME TO EXPLAIN WHY ..
AFTER applying the above formula
so we have 1/9(1/n1^2-1/n2^2)=1/4(1/4-1/6)
so, after that we have by solving
1/n1^2-1/n2^2=9/16-9/64
and bysolving further i am getting 27/64 .
we have to write 27/64 in the way of 1/n1^2-1/n^2
and thats not possible anyhow .
SO, THE QUESTION IS WRONG
KINDLY RECHECK THE QUESTION PLZZ..
ALL THE BEST ..
