Assertion: A person sitting in an artificial satellite revolving around the earth feels weightless.
Reason: There is no gravitational force on the satellite.

Options

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

Answer

To solve the question, we need to analyze the assertion and reason provided:

### Step 1: Understand the Assertion
The assertion states that a person sitting in an artificial satellite revolving around the Earth feels weightless. This is true because the satellite and everything inside it, including the person, are in free fall towards the Earth due to gravity. However, since they are also moving forward at a high speed, they continuously fall around the Earth rather than directly towards it.

**Hint:** Think about how gravity affects objects in orbit and the concept of free fall.

### Step 2: Understand the Reason
The reason given is that there is no gravitational force on the satellite. This statement is false. In reality, the satellite is under the influence of Earth's gravitational force, which keeps it in orbit. The gravitational force is what allows the satellite to maintain its circular path around the Earth.

**Hint:** Recall Newton's law of universal gravitation and how it applies to objects in orbit.

### Step 3: Analyze the Forces
When the satellite is in orbit, the gravitational force acting on it is balanced by the centrifugal force due to its circular motion. For a person inside the satellite, the normal force (which we perceive as weight) is zero because both the person and the satellite are accelerating towards the Earth at the same rate. This is why the person feels weightless.

**Hint:** Consider the balance of forces acting on the satellite and the person inside it.

### Step 4: Conclusion
From the analysis:
- The assertion is true: A person in an artificial satellite feels weightless.
- The reason is false: There is indeed a gravitational force acting on the satellite.

Thus, the correct conclusion is that the assertion is true, but the reason is false.

**Final Answer:** The correct option is (C) - Assertion is true but reason is false.