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Good. We are waiting for final answer key……..
3-A
Because a.e. is 1/2(epsilonE^2). and cos function means 1/2 com. So 1/4 came. answer will b A
15.b, 62.b, 64.d
modified answer key are—–
3-B(see below of Chapter-9 of quantum mechanics by D J Grifith.)
43-C not A(using stokes theorm).
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