All of the following statements about an intraoral dental
X-ray film are true except:
It is composed of a cellulose acetate base coated with a silver bromide emulsion
It has a thin sheet of lead foil that lies in front of the film to prevent overexposure
It has an embossed dot on it which should be orientated towards the source of X-rays
It is exposed by the direct action of X-rays on the emulsion