Question

The earth takes $24\mathrm{h}$ to rotate once about its axis. How much time does the sun take to shift by $1°$ when viewed from the earth?

Answer 1

Step 1: Given data

Earth takes $24\mathrm{h}$ to rotate once about its axis.

That is, it takes $24\mathrm{h}$ to rotate $360°$.

Step 2: Time taken to shift by $1°$

Earth takes $24\mathrm{h}$ to rotate $360°$.

$24\mathrm{h}$ means $24\times 60=1440\min$

Time taken to rotate $1°$ is$\frac{1440}{360}=4\min$

Hence, time taken to rotate $1°$is $4\min$.