# For a radioactive substance, show the variation of the total mass disintegrated as a function of time t graphically.

#### For a radioactive substance total mass disintegrated as a function of time (t) is given as

$$M = M_0 e^{-\lambda \ t}$$

Where, $$M_0 = $$ mass of radioactive substance at $$t= 0 \sec$$

$$M = $$ Mass of radioactive substance present at any time $$'t''$$