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QusWhich type of sensor is used to detect the presence of radioactive materials? Qusरेडियोधर्मी मैटेरियल्स के प्रेज़ेन्स का पता लगाने के लिए किस प्रकार के सेंसर का यूज़ किया जाता है?


A. Radiation sensor
B. Gas sensor
C. Optical sensor
D. Proximity sensor


Solution
A. Radiation sensor



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