Question

26. Four identical rods of same material are joined end to endto form a square. If the temperature difference between theends of a diagonal is 100°C, then the temperature differensbetween the ends of other diagonal will be(1) 0°C(2) 100/L°C; where I is the length of each rod(3) 100°C​

Answer 1

Answer:

Four identical rods A, B, C, D which having AC & BD as a diagonal point.

Let the temperature at A=T  

0

C

Therefore, temperature at C=t+100  

0

C

Heat is conducted from A to C via B or D. B & D lies midway along with the passing of heat conduction through ABC and ADC respectively.

Hence, temperature of B=  

2

t+(t+100)

​  

=t+50  

0

C

similarly,temperature of D=  

2

t+(t+100)  

=t+50  0

C  

So, the difference of temperature between diagonal BD=0

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