MP Board · Class 9 · Science · SoundWhat is SONAR? State its full form and main working principle.
Step-by-Step Solution
SONAR stands for SOund Navigation And Ranging. It is an electronic device that uses ultrasonic waves to measure the distance, direction, and speed of underwater objects such as icebergs, sunken ships, and submarines. Its working principle is based on the reflection of sound waves. A transmitter emits ultrasonic pulses that travel through water, bounce off underwater objects, and return to a detector which calculates the distance using the elapsed time.
💡 Study Guide: This question tests core syllabus concepts from Sound. For formulas, key summaries, and mock exam reference guides, read the full Sound Revision Notes.