Q. Instrument used to measure the earthquake is known as:

Explanation by: Mr. Dubey

A seismograph is an instrument used to detect and record earthquakes. It measures the seismic waves generated by tectonic movements in the Earth's crust. The recorded data is called a seismogram, which shows the intensity and duration of the earthquake.
Quake meter and quake graph are not standard scientific terms.
Typanicgraph is not related to earthquakes.
So, the correct and scientific term is Seismograph.