118
112
124
16
Correct answer is B
T α1R3
T = kR3
k = TR3
= 281 x 33
= 281 x 27
dividing 81 by 27
k = 22
therefore, T = 23 x 1R3
When R = 2
T = 23 x 123 = 23 x 18
= 112
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