Assertion: Geostationary satellite appear fixed from any point on earth.
Reason: The time period of geostationary satellite is `24` hrs

Options

A. If both the assertion and reason are true and reason is a true explantion of the assertion.
B. If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.
C. If the assertion is true but reason false
D. If both the assertion and reason are false.

Explanation

To solve the question regarding the assertion and reason about geostationary satellites, we will analyze both statements step by step.

### Step 1: Understanding the Assertion
The assertion states that "Geostationary satellites appear fixed from any point on Earth."

- A geostationary satellite is one that orbits the Earth at the same rotational speed as the Earth itself. This means that it takes 24 hours to complete one orbit around the Earth.
- Because it matches the Earth's rotation, it stays over the same point on the Earth's surface, making it appear fixed to an observer on the ground.

### Step 2: Understanding the Reason
The reason states that "The time period of a geostationary satellite is 24 hours."

- The time period of a satellite is the time it takes to complete one full orbit around the Earth.
- For a satellite to be geostationary, it must have an orbital period equal to the rotational period of the Earth, which is indeed 24 hours.

### Step 3: Conclusion
Both the assertion and the reason are true. The reason correctly explains why the assertion is true. Therefore, we conclude that:

- **Assertion**: True
- **Reason**: True
- **Explanation**: The reason (24-hour time period) is the correct explanation for the assertion (fixed appearance).

### Final Answer
The correct answer is option A: Both assertion and reason are true, and the reason is the correct explanation of the assertion.

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