Q)
A molecule of a substance has a permanent electric dipole moment of magnitude $10^{–29}\; cm$. A mole of this substance is polarised (at low temperature) by applying a strong electrostatic field of magnitude $10^6\; Vm^{–1}$. The direction of the field is suddenly changed by an angle of $60^{\circ}$. Estimate the heat released by the substance in aligning its dipoles along the new direction of the field. For simplicity, assume 100% polarisation of the sample.
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