For a reaction, consider the plot of lnk versus 1/T given in the figure. If the rate constant of this reaction at 400 K is 10−5 s−1, then the rate constant at 500 K is : [JEE MAINS - ONLINE - 2019]
(1) 2×10−4 s−1
(2) 10−4 s−1
(3) 10−6 s−1
(4) 4×10−4 s−1