Question

Explain the Following
(a) What do you understand by the term mean solar day?

(b) How many hours are there in one mean solar day?

(c) How many minutes are there in one mean solar day?

(d) How many seconds are there in one mean solar day?

Answer 1

Step1: Mean Solar Day

1. The average of all solar days in which the earth completes one rotation on its axis is called the mean solar day.
2. The mean solar day is divided into twenty-four equal intervals and each interval is called an hour.
3. A mean Solar day is 24 hours.
4. There will be 24hours in one mean solar day

Step2: one mean solar day in minutes

On one mean solar day, there will be
$$\begin{gathered} 1day=24hours \\ 1hour=60minutes \\ 1meansolarday=24hoursx60minutes \\ 1meansolarday=1440minutes \end{gathered}$$

Step3: one mean solar day in seconds

On one mean solar day, there will be
$$\begin{gathered} 1day=24hours \\ 1hour=60minutes \\ 1minute=60seconds \\ 1meansolarday=24hoursx60minutesx60seconds \\ 1meansolarday=86400seconds \end{gathered}$$