RRB Technician Grade 3 previous year question
An ultrasonic wave has a frequency of 33 kHz. What will be the speed of this wave if its wavelength is 0.01 m?
Asked in RRB Technician Grade 3 (09 Mar 2026 Shift 2) · Science
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Correct answer: (C) 330 m/s
Speed = frequency × wavelength = 33000 Hz × 0.01 m = 330 m/s.
हिंदी में प्रश्न
किसी पराश्रव्य तरंग की आवृत्ति 33 kHz है। यदि इसकी तरंगदैर्घ्य 0.01 m है, तो इस तरंग की चाल कितनी होगी?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 330 m/s
चाल = आवृत्ति × तरंगदैर्ध्य = 33000 Hz × 0.01 m = 330 m/s।
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