If the charge flowing through a metal rod is halved and the temperature difference across
the ends of that rod is increased by 200 % the thomson heat absorbed or liberated

A) increases by 50 %
B) decreases by 50 %
c)increases by 100%
D)decreases by 25%

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1.6+2.9+3.12+.......+ n(3n+3)=

A)n(n+1) (n+2)
B)(n+1) (n+2) (n+3)
C)(n+2) (n+3) (n+4)
D)(n-1) n(n+1)
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