Ultrasonic waves
Ultrasonic waves is a Science & Technology concept from the MPSC syllabus, tested in 3 past MPSC questions (2013, 2017, 2022). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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श्रव्यातीत तरंग असे तरंग आहेत की ते Ultrasonic waves are those waves which
Ultrasonic waves have frequencies above the human hearing range (greater than 20 kHz), hence they cannot be heard by human beings.
सोनार (साऊंड नेव्हीगेशन श्रेणी) तंत्र ______ यासाठी वापरले जाते. SONAR (Sound Navigational Ranging) technique is used for ______ .
SONAR uses ultrasonic sound waves to navigate, measure distances, and detect objects underwater, such as submarines or sea beds.
खालीलपैकी कोणते विधान सत्य नाही ? Which of the following statements is not true ?
SONAR (Sound Navigation and Ranging) uses sound waves for underwater navigation and detection, whereas gold plating is an electrochemical process, making statement 4 false.