eure u can use that aprox only if the percentage of change is very low!!!!!!!!!!
so uve to do it conventionally!!!!!
if tension in sonometer wire is increases by 20%...the frequncy of the same mode of vibration increases by ???
i am gettign 10% but answer is 14%
plz point out my fooolish mistake
actually my answer is also coming 10% as wavelength is constant
the only thing changing is vel which is propotional to root t
eure u can use that aprox only if the percentage of change is very low!!!!!!!!!!
so uve to do it conventionally!!!!!