Two identical fuses are rated at `10A`. If they are joined

We have two identical fuses which are rated at 20 A. If these two are joined

Two identical rods are joined at their middle points The ends are maintained at constant temperatures as indicated Find the temperature of the junction .

Two identical prisms with triangle as base are joined to form a rectangular prism as shown below:What is its total surface area?

Two identical solid cubes of side a units are joined end to end.Then the total surface area of the resulting cuboid is

Two identical springs of force constant "k" are joined one at the end of the other (in series). Find the effective force constant of the combination.

Two fuse wires are rated 5 A and 20 A. Which of the two is (i) thicker, (ii) longer ?

Two identical solid cubes of side a are joined end to end. Then, the total surface area of the resulting cuboid is 10a^(2) .