waves

well i have trouble in understanding the concepts of waves.
Selected topics are
1. when a equation can represent a wave equation
2. interference
3. reflection, refraction

so if u guys get any concept about these topics then pleasepost a reply to this thread.

4 Answers

62
Lokesh Verma ·

The equation of a "wave" is givne by
∂2u/∂t2 = c2∇2u

well you dont need to read too that much beyond this ...

for JEE, I think you can do even without this!

62
Lokesh Verma ·

what did u not understand in interference or reflection or refraction..?

Wave front is the best method to understnad some of it.. i think NCERT does a good job to explain some of it!

106
Asish Mahapatra ·

in the equation u have given what is delta square i.e what exactly is theRHS?

62
Lokesh Verma ·

that is the grad opeator..

∂2x/∂t2+∂2y/∂t2+∂2z/∂t2

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