Question

14. An iron rod of length 50cm is joined at an end to copper rod of length 100cm at 20°C. Find the length of the system at 100°C and average coefficient of linear expansion of the system. (Qiron = 12 x10/°C anda copper =17x10-6/°C.).Can u pls solve it​

Answer 1

Answer:

The average linear expansion coefficient of composite system is 3 x10-³ cm/C.

The average linear expansion coefficient of two systems are given as

1₁ + 12, where I, and 1₂ are the linear expansion of each system.

and I = length x coefficient of linear expansion

For Iron,

length = 50cm

coefficient of linear expansion = 12×10-6/ C

So, I, 50 x 12x10-6 = 6x10-4 cm/C

For Aluminium,

length = 100cm

coefficient of linear expansion = 24x10-6 / C

So, 1₂= 100 x 24x10-6 =24x10-4 cm/C

So, total linear expansion coefficient of

the system is 1₁ + 1₂ = (6x10-4 +24x10-4) cm/C= 30 x10-4

cm/C

= 3x10-³ cm/C

Step-by-step explanation:

hope this helps you dear

god bless you