Cutting tools have either sharp or pointed edges so that a …………… thrust may cause a …………… pressure at that edges and cutting can be done with less effort. (a) high, high (b) small, small (c) high, small (d) small, high

(d) small, high

Reason — For a given thrust, the pressure on a surface is increased by reducing the area of surface on which it is acting, hence, cutting tools have either sharp or pointed edges so that a small thrust may cause a high pressure at those edges and cutting can be done with less effort.