# The rate constant $k_1\: and \: k_2$ for two different reactions are $106{16}.e^{-2000/T}\: and \: 10^{15}.e^{-1000/T}$ , respectively. The temperature at which $k_1 = k_2$ is :

$\begin {array} {1 1} (1)\;\large\frac{1000}{2.303}K & \quad (2)\;1000K \\ (3)\;\large\frac{2000}{2.303}K & \quad (4)\;2000K \end {array}$