WHICH SENSOR OPERATES BASED ON SOUND WAVE REFLECTION

O Level Online Exam

NIELIT O Level Exam

Which sensor operates based on sound wave reflection?

कौन सा सेंसर ध्वनि तरंगों के परावर्तन के आधार पर कार्य करता है?

A. LDR

B. Ultrasonic Sensor

C. IR Sensor

D. Gas Sensor

Correct Answer is :

B. Ultrasonic Sensor