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The instrument that records earthquake waves is the:
ABarometer
BThermometer
CHygrometer
DSeismograph
Answer & Solution
Correct answer: D. Seismograph
1. Earthquake waves reaching the surface are recorded.
2. The recording instrument is the seismograph.
3. P, S and surface waves each mark it differently.
_Source: NCERT Class 11 Geography, Ch 3 'Interior of the Earth' (kegy203)_
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