Which meter is suitable for the measurement of 10 mV at 50 MHz?
1). Moving iron voltmeter
2). VTVM
3). Moving coil voltmeter
4). CRO
Moving coil instruments are used for the measurement of DC quantities only.
Moving iron instruments are not suitable for the measurement of very low voltages at high frequencies.
Cathode ray oscilloscopes are suitable for the measurement of very low voltages at high frequencies. So, CRO is suitable for the measurement of 10 mV at 50 MHz.1. ____________ fiber is used in interferometric instruments.
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