LAW OF DIMINISHING MARGINAL UTILITY

   This law was first of all given by french engineer,"GOSSEN".According to this law as one individual go on consuming a commodity,the marginal utility obtained from its additional units goes on diminishing.For example,when one man is hungrey and starts to get the roti. The utility is maximum at the first unit of the roti.At the second roti,one gets less utility.This process goes on and utility at every step goes on diminishing.Therefore,it is called Gossen's First Law.Dr.Marshall explained the law in a more better way.He says that "the additional benefit which a person derives from a given increase of his stock of thing diminishing with every increase in the stock that he already has."