Question

The most suitable pressure gauge to measure pressure in the range of ${10}^{-4}to{10}^{-3}torr$ is

• A. Bellows
• B. Barometer
• C. Strain gauge
• D. Pirani gauge

Answer 1

The correct option is D Pirani gauge

• Given pressure range is ${10}^{-4}to{10}^{-3}torr,$ this means it is low pressure range.
• Out of given choices "Pirani gauge" is the suitable pressure gauge which can meassure the given range of pressure.