Dipole moment depends on _______a)Charge onlyb)Charge and length of a dipolec)Charge, length of a dipole and dielectric constant of the mediumd)Charge and dielectric constant of the mediumCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Dipole moment is a measure of the polarity of a molecule. It is defined as the product of the magnitude of the charge on either end of a polar molecule and the distance between them. The dipole moment depends on the following factors:

Charge: The magnitude of the charge on either end of a polar molecule determines the strength of the dipole moment. A larger charge will result in a larger dipole moment.

Length of a dipole: The distance between the charges on either end of a polar molecule determines the length of the dipole. A longer distance will result in a larger dipole moment.

Dielectric constant of the medium: The dielectric constant of the medium in which the dipole is placed will affect the strength of the dipole moment. A higher dielectric constant will result in a larger dipole moment.

Therefore, the correct answer is option B, which states that the dipole moment depends on the charge and length of a dipole. The dielectric constant of the medium can affect the strength of the dipole moment, but it is not a primary factor.

Answer

Dipole is defined as two equal but opposite charges, kept at a small distance and having a dipole moment. The dipole moment is simply the product of the electric charge and length of the dipole. The dielectric constant of the medium doesn’t affect the dipole moment i.e. dipole moment of an electric dipole will be the same in water as well as in the air.

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