State whether the following statements are True (T) or False (F):
The relative index of refraction of a medium with respect to air can be less than one.

State whether the following statements are True (T) or False (F): A cell is a source of electrons.

State wheteher the following statements are True (T) or False (F): All insulators are dielectrics.

State whether the following statements are True (T) or False (F): The charging equation of a cell is V= E + Ir.

State whether the following statements are True (T) or False (F): In Boolean algebra (A+A) = A.

State whether the following statements are True (T) or False (F): The charge of a body may be 2 xx 10^19C .

State whether the following statements are True (T) or False (F): Electric field is a scalar field.

State whether the following statements are True (T) or False (F): The discharge equation of a cell is E=V - Ir.

State whether the following statements are True (T) or False (F) The refractive index of the material of a prism depends on the angle of the prism.

State whether the following statements are True (T) or False (F) The refractive index of a transparent medium varies directly as the wavelength of the monochomatic light.

State whether the following statements are True (T) or False (F): An electric line of force is the locus of the test charge.