The graph which represents the correct variation of logarithm of activity (log A) versus time, in figure is.
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At time t=0 , some radioactive gas is injected into a sealed vessel. At time T , some more of the same gas is injected into the same vessel. Which one of the following graphs best represents the variation of the logarithm of the activity A of the gas with time t ?

At time t=0 , some radioactive gas is injected into a sealed vessel. At time T , some more of the same gas is injected into the same vessel. Which one of the following graphs best represents the variation of the logarithm of the activity A of the gas with time t ?

The graph which represents the correct relation between Coulomb force versus distance between two point charges is............

Which of the following graphs represent the correct variation of inductive reactance X_(L) with frequency upsilon ?

Which of the following graphs represent the correct variation of inductive reactance X_(L) with frequency upsilon ?

A radioactive isotope X decays into a stable nucleus Y. Draw graphs showing the variation of rate of formation of Y versus time and the variation of population of Y versus time. Initial population of Y is zero.