Question

A metal rod of 0.4 m length has temperature gradient is 10°C/m. Calculate temperature difference between its two end. 
4 °C

5 °C

3 °C

8 °C​

Answer 1

Given:

Length of the rod = 0.4 m

Temperature gradient in the rod = 10°C/m

To find: The temperature difference between its two ends.

Solution:

We know that temperature gradient means the change in temperature of a material per unit of its length. Hence to find the temperature between its two ends we can multiply its temperature gradient with it length. Hence in this case, the temperature difference between the two ends of the rod = 0.4 × 10 = 4°C

Thus, the temperature difference between the two ends of the rod will be 4°C.