Which of the following are true ?

Options

A. A polar satellite goes around the earth's pole in north-south direction
B. A geostationary satellite goes around the earth in east-west direction
C. A geostationary satellite goes around the earth in west-east direction
D. A polar satellite goes around the earth in east-west direction

Explanation

To determine which statements about polar and geostationary satellites are true, we will analyze each option step by step.

### Step 1: Understand Polar Satellites
- A polar satellite orbits the Earth in a north-south direction. It passes over the poles, allowing it to cover the entire surface of the Earth as the planet rotates beneath it.

**Hint:** Remember that polar satellites provide global coverage by moving from pole to pole.

### Step 2: Evaluate Option 1
- **Option 1:** "A polar satellite goes around the earth's pole in north to south direction."
- This statement is **true** because polar satellites indeed orbit from the North Pole to the South Pole.

**Hint:** Think about the path a satellite takes over the Earth's poles.

### Step 3: Understand Geostationary Satellites
- A geostationary satellite orbits the Earth at the same rotational speed as the Earth. This means it appears to be stationary relative to a point on the Earth's surface. For this to happen, it must orbit in the same direction that the Earth rotates.

### Step 4: Evaluate Option 2
- **Option 2:** "A geostationary satellite goes around the earth in east to west direction."
- This statement is **false** because geostationary satellites orbit in the west to east direction, following the Earth's rotation.

**Hint:** Consider the direction of the Earth's rotation and how it affects satellite motion.

### Step 5: Evaluate Option 3
- **Option 3:** "A geostationary satellite goes around the earth in west to east direction."
- This statement is **true** because geostationary satellites must orbit in the same direction as the Earth's rotation, which is west to east.

**Hint:** Relate the satellite's orbit to the Earth's rotation direction.

### Step 6: Evaluate Option 4
- **Option 4:** "A polar satellite goes around the earth in east to west direction."
- This statement is **false** because polar satellites orbit from north to south and vice versa, not east to west.

**Hint:** Visualize the satellite's path relative to the poles.

### Conclusion
Based on the analysis:
- **True Statements:** Option 1 (A polar satellite goes around the earth's pole in north to south direction) and Option 3 (A geostationary satellite goes around the earth in west to east direction).
- **False Statements:** Option 2 and Option 4.

### Summary of True Statements:
1. A polar satellite goes around the earth's pole in north to south direction. (True)
3. A geostationary satellite goes around the earth in west to east direction. (True)