42) A body of weight 100 N lies on a horizontal plane for which coefficient of friction (CoF) is 0.75. Find (a) normal reaction, (b) limiting force of friction, (c) horizontal force required to move.

43) Bulk modulus is directly proportional to ____ and inversely proportional to _____

44) (1/200) of one hectare is

45) A ladder 12.5 metres long is placed with upper against a wall. The lower end of ladder being 7.5 metres from the wall then what is the height of wall from the ground to above upper end of the ladder?

46) In graph ____ is the intersection point of co-ordinate axis.