Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Waves and SoundEasy · 45s
Which one of the following is not an application of ultrasonic waves?
TopicWaves and Sound
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Microwaves, not ultrasonic waves, are used for cooking.
Final Answer: Option C - Cooking food