A: Earth's magnetism protects us from many of thte harmful cosmic rays.
R: Earth's magnetism is due to a large permagnet magnet inside earth.

Options

A. If both Assertion & Reason are the true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reson is not the correct explanation of the assertion, then mark (2)
C. If Assertion is true statement but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To solve the assertion and reason type question regarding Earth's magnetism, we will analyze both the assertion and the reason step by step.

### Step 1: Analyze the Assertion
**Assertion**: Earth's magnetism protects us from many harmful cosmic rays.

- **Explanation**: This statement is true. The Earth's magnetic field acts as a shield against harmful cosmic rays and solar radiation. It deflects charged particles from the solar wind and cosmic rays, which could otherwise be detrimental to life on Earth.

### Step 2: Analyze the Reason
**Reason**: Earth's magnetism is due to a large permanent magnet inside the Earth.

- **Explanation**: This statement is false. The Earth's magnetism does not originate from a large permanent magnet inside the Earth. Instead, it is primarily caused by the movement of molten iron and nickel in the outer core of the Earth, which generates electric currents. These currents produce the magnetic field through the dynamo effect.

### Step 3: Conclusion
- Since the assertion is true and the reason is false, the correct relationship is that the assertion is true, but the reason is false.

### Final Answer
The correct answer is: Assertion is true, but Reason is false.

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