The earth takes 24 h to rotate about its own axis. Through what angle will it turn in 5 h and 24 min?

Correct option is B

Given:

The angle earth will turn in 5 hours and 24 minutes.
Formula Used:
The earth rotates 360 degrees in 24 hours.

The angle turned per hour is:
$$\frac{360}{24}$$​ = 15 degrees per hour
Solution:
Convert 24 minutes into hours:
24 minutes =$$\frac{24}{60}$$​= 0.4 hours
So, the total time is  5 + 0.4 = 5.4 hours.
The angle turned in 5.4 hours is:
$$15 \times 5.4$$​ = 81 degrees
Thus, the earth will turn through an angle of $$81^\circ$$​ in 5 hours and 24 minutes.