Three rods of equal length 
are joined to form an equilateral triangle 
is the mid point of 
. Distance 
remains same for small change in temperature. Coefficient of linear expansion for 
and 
is same, i.e., 
but that for 
, it is 
. Choose the
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
On neglecting 
and 
, and
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