Question

d) How does a seismograph measure earthquake please helpe ​

Answer 1

Answer:

by the help of metre

Explanation:

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Answer 2

Explanation:

. A seismograph, or seismometer, is an instrument used to detect and record earthquakes. ... This record is proportional to the motion of the seismometer mass relative to the earth, but it can be mathematically converted to a record of the absolute motion of the ground.