The activity of a radioactive sample moving with velocity V is given by. A detector at a distance from the sample detects number of counts per second, If the count number detected by the counter remains constant, what is the speed of the sample. V ( 1 ) =- -Ir e 2 V ( t ) = re' V ( 1 ) =20-2 2 -21 V (1) 04 An incompressible fluid is flowing through water pipe is shown in the figure are the pressure at point 1 and 2. are the velocity of fluid particle at points 1 and 2. then, OP ,= P2. V1=V2 O P 1=P2 V 1