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Q. What are polar molecules? Give an example.
i) A polar molecule is one in that the centre of gravity of the positive charges is separated from the centre of gravity of the negative charges by a finite distance.
ii) Instance: N2O, H2O, HCl, NH3.
iii) They have an eternal dipole moment.
Show that the spectrum of thermal radiation for T ¼ 300K peaks at approximately 10 microns.
Example like or unlike parallel forces
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Its working is based on the principle of tangent law. It having of a small compass needle, pivoted at the centre of a circular box. The box is reserved in a wooden frame having two
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