Answer
Two methyl groups are attached with the O atom by two single bonds. Here, O forms two sigma bond with two C atoms which can be seen in the below figure.
London dispersion forces are present between molecules of dimethyl ether.
Work Step by Step
As the molecule is non polar in nature, weak intermolecular force i.e. london dispersion force is found in this ether by induced dipole-induced dipole moment. This is a type of Van Der Waals forces.
