A parallel plate capacitor has a capacitance of 50 pf in air and 150 pf when immersed in oil. The dielectric constant of oil is (a) 0. 25 (b) 3. 00 (c) 0. 45 (d) 1. 10.

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.