A molecule with a dipole moment p is placed in an electric field of st – McqOptions

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1.	A molecule with a dipole moment p is placed in an electric field of strength E. Initially the dipole is aligned parallel to the field. If the dipole is to be rotated to be anti-parallel to the field, the work required to be done by an external agency is [UPSEAT 2004]
A.	? 2pE
B.	? pE
C.	pE
D.	2pE
Answer» E.

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