Correct Answer: (1) Audiometer
Note: An audiometer is a machine used for evaluating hearing acuity.
• A spectrometer is a scientific Instrument used to separate and measure spectral components of a physical phenomenon.
• Illuminance meter or lux meter Is used to measure the amount of light in a space/on a particular work surface.
• Voltmeter is used to measure voltages in both direct and alternating currents.
