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Assertion : The magnetic Held lines of t...

Assertion : The magnetic Held lines of the earth resemble that of a magnetic dipole located at the centre of the earth.
Reason : The axis of the dipole coincide with the axis of rotation of the earth.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true and reason is not the correct explanation of assertion.

C

If assertion is ture but reason is false.

D

If both assertion and reason are false.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that "The magnetic field lines of the earth resemble that of a magnetic dipole located at the center of the earth." - This is true. The Earth's magnetic field can indeed be modeled as that of a magnetic dipole. The magnetic field lines emerge from the magnetic south pole and enter the magnetic north pole, resembling the pattern of a bar magnet. ### Step 2: Analyze the Reason The reason states that "The axis of the dipole coincides with the axis of rotation of the earth." - This statement is false. While the Earth's magnetic field can be approximated as that of a dipole, the axis of this magnetic dipole is not aligned with the Earth's rotational axis. The magnetic axis is tilted at an angle of approximately 11.3 degrees from the rotational axis. ### Step 3: Conclusion Based on the analysis: - The assertion is true. - The reason is false. Thus, the correct answer 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. ---
To solve the question, we need to analyze both the assertion and the reason provided. ### Step 1: Analyze the Assertion The assertion states that "The magnetic field lines of the earth resemble that of a magnetic dipole located at the center of the earth." - This is true. The Earth's magnetic field can indeed be modeled as that of a magnetic dipole. The magnetic field lines emerge from the magnetic south pole and enter the magnetic north pole, resembling the pattern of a bar magnet. ### Step 2: Analyze the Reason ...
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