00:01
In this question, it is given that a composite slab is prepared by pasting two plates of thermal conductivity k1 and k2.
00:08
And we have to find the thermal conductivity of the equivalent slab.
00:13
So first of all, i am drawing the diagram for this given fusion that this is the first slab and this is the second slab.
00:27
And we have given that the cross -sectional area of both the slabs are same.
00:32
So cross -sectional area of both the slab, let this is a, and we have given the thermal conductivity of this slab that is k1 and thermal conductivity of this slab, let it is k2.
00:43
And the length is let it is l1 and this is the length of the second slab that is l2.
00:51
Now, let this is the equivalent slab and the thermal conductivity of this equivalent slab, let it is denoted by k, and the area of this equivalent slab is also a and the length is given by l1 plus l2.
01:22
So this is our equivalent slab...