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List of top Sensors and Bioinstrumentation Questions on Sensors and transducers asked in GATE BM

A photodiode is in series with a \(10\ \text{k}\Omega\) resistor. A laser beam with wavelength \(532\) nanometer shines on this photodiode such that the entire beam is incident on its active area. The photodiode responsivity is \(0.5\) ampere per watt (A/W) at this wavelength. If a voltage of \(10\) millivolts (mV) is developed across the \(10\ \text{k}\Omega\) resistor, the laser power incident on the photodiode is microwatts (\(\mu W\)). (Round off to one decimal place).

Assume that the dark current of the photodiode is zero.
  • GATE BM - 2026
  • GATE BM
  • Sensors and Bioinstrumentation
  • Sensors and transducers
Which of the following displacement sensors is known to have high sensitivity and a relatively larger measurement range?
  • GATE BM - 2021
  • GATE BM
  • Sensors and Bioinstrumentation
  • Sensors and transducers
Which of the following temperature sensors is used in contact-type digital thermometers for measuring body temperature?
  • GATE BM - 2021
  • GATE BM
  • Sensors and Bioinstrumentation
  • Sensors and transducers