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Q. |
spectroscopy? |
A. | expansion of gas upon heating |
B. | increase in resistance due to an increase in temperature and vice versa |
C. | temperature difference gives rise to a potential difference in the material |
D. | decrease in resistance due to an increase in temperature |
Answer» A. expansion of gas upon heating | |
Explanation: it is also known as pneumatic detector. the gases expand on heating and this in turn leads to the movement of a diaphragm just like in pneumatic sensors. |
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