5 nom ber questions

1. Physics and maths ncert Hindi me

|x 2 2

2 x 2

2 2 x| =0

|x 2 2

2 x 2

2 2 x| =0

a wire of resistane R ,length L and area of cross section A is cut into 2 parts , having ratio of their lengths 1:2. the shorter wire is now stretched till its length becomes equal to that of longer wire . if now the 2 parts are connected in parallel than find equivalent resistance

x-y=0.9,1.1/x y=2

Show that rootp+rootq is irrational number 

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