A sound level meter has two selectable ranges

PHYSICS · Multi-part · Fermi University Physics · Scientific Practice & Experimental Methods · Quantities, units and the practice of measurement · Quantities, units and the practice of measurement

Measurement and Method, Ch The instrument: resolution, sensitivity, calibration and traceability

Problem

A sound level meter has two selectable ranges. Range A displays from 30.0 dB30.0\,\mathrm{dB} to 100.0 dB100.0\,\mathrm{dB}; Range B displays from 60.0 dB60.0\,\mathrm{dB} to 130.0 dB130.0\,\mathrm{dB}. Both ranges resolve 0.1 dB0.1\,\mathrm{dB}. ((a)) State the range and the span of Range A. ((b)) State the range and the span of Range B.

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