The polymer(s) used in the making of photographic films is/are P. perspex Q. rayon R. xylonite

P. Poly(methyl methacrylate) (PMMA) or perspex by brand name, is a transparent thermoplastic often used as a lightweight or shatter-resistant alternative to glass. Q. Rayon is a semi-synthetic polymer. It is made from purified cellulose, primarily from wood pulp, which is chemically converted into a soluble compound. It is then dissolved and forced through a spinneret to produce filaments which are chemically solidified, resulting in synthetic fibers of nearly pure cellulose. R. Celluloids are a class of compounds created from nitrocellulose and camphor, with added dyes and other agents. Generally considered the first thermoplastic, it was first created as Parkesine in 1856 and as xylonite in 1869, before being registered as celluloid in 1870. Celluloid is easily molded and shaped, and it was first widely used as an ivory replacement. The main purpose was movie and photography film industries. Hence, only statement R is the correct answer.