Consider a device havin output propotional to the input..........for xampl consider an amplifier,in tat wen u giv input of 2 volts, u ll gt output of 4 volts...here output is twice d input ....tat is linearly propotional.........so i such devices.....wen a person stands near it,his ear shrinks or bcomes small in size.............do u know y ?????????????????
think.........




think..............











coz we call those devices havin output propotional 2 b input 2 be linear(lean-ear)........
so person s ear shrinks or bcomes smal in size..................