Question
Download Solution PDFImaginary line passing through the points having equal magnetic declination is termed as
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Imaginary Line Passing Through Points of Equal Magnetic Declination
An imaginary line passing through the points on the Earth's surface where the magnetic declination is the same is known as an isogonic line. Magnetic declination is the angle between geographic north (true north) and magnetic north. The concept of isogonic lines is widely used in navigation and geophysics.
Analyzing the Given Options
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Option 1: Isogonic Line (Correct Answer)
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Definition: An isogonic line connects points of equal magnetic declination on the Earth's surface.
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These lines are crucial for navigation as they help in correcting compass readings.
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Option 2: Agonic Line (Incorrect)
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An agonic line is a line where the magnetic declination is zero (i.e., magnetic north coincides with geographic north).
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This is different from an isogonic line, which connects points of equal (non-zero) magnetic declination.
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Option 3: Contour Line (Incorrect)
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Contour lines represent points of equal elevation on a map, not magnetic declination.
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They are used in topographical maps to depict the terrain's shape, which is unrelated to magnetic fields.
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Option 4: None of the Above (Incorrect)
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The correct term for the line connecting points of equal magnetic declination is isogonic line, so this option is not valid.
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Conclusion:
The correct answer is Option 1: Isogonic Line.
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