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प्रश्न
Name the mantle-core interface where primary seismic waves slow down and secondary seismic waves disappear completely.
विकल्प
Gutenberg Discontinuity
Mantlic Discontinuity
Core Discontinuity
Mohorovicic Discontinuity
MCQ
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उत्तर
Gutenberg Discontinuity
Explanation:
The Gutenberg Discontinuity is the boundary between the mantle and the core. At this depth, primary seismic waves (P-waves) slow down significantly, and secondary seismic waves (S-waves) disappear completely because the outer core is in a molten state. This discontinuity occurs at around 2900 km below the Earth's surface.
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