RADAR
Tested in 4 real MPSC questions across 1 year (2017–2017). See it in context on the interactive Concept Graph →
Years it was asked
Real questions that test this
समुद्राची खोली काढण्यासाठी या तंत्राचा वापर करतात : To determine the depth of sea this technique is used :
a)(1) थर्मल डिटेक्टर / Thermal detector
b)(2) कुंडस् ट्युब / Kundt's tube
c)(3) ऑसिलेटर / Oscillator
d)(4) सोनार (SONAR) / SONAR✓ Correct
SONAR (Sound Navigation and Ranging) uses ultrasonic waves to measure distances and determine the depth of the sea by timing the echo return.