1.

In the nuclear fusion reaction ""_(1)^(2)H+""_(1)^(3)H to ""_(2)^(4)He+n given that the repulsive potential energy between two nuclei is -7.7 xx 10^(-14)J, the temp. at which gases must be heated to initiate the reaction is nearly : (k=1.38 xx 10^(-23))

Answer»

`10^(7)K`
`10^(3)K`
`10^(9)K`
`10^(7)K`

Solution :Energy `=3/2kT`
`T=2/3. (7.7 XX 10^(-14))/(k) =2/3 xx (7.7 xx 10^(-14))/(1.38 xx 10^(-23))=10^(9)K`


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