wat's the answer for permittivity of vacuum is equal to?
Sir, why we can't use lens of smaller focal length? Is it possible?
in physics i want to how to study for the compulsory problem? tat means which...
from which lesson compulsury problems will be asked more
i have learnt that electrical lines of forces are just a graphical representa...
i'am felling va bit difficult with maths...give mw some ideas 2 perpare well
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