JEE Main & Advanced
Physics
Wave Mechanics
Question Bank
Basics of Mechanical Waves
question_answer
A source of sound of frequency 600 Hz is placed inside water. The speed of sound in water is 1500 m/s and in air is 300 m/s. The frequency of sound recorded by an observer who is standing in air is [IIT-JEE Screening 2004]
A) 200 Hz
B) 3000 Hz
C) 120 Hz
D) 600 Hz
Correct Answer:
D
Solution :
Frequency of sound does not change with medium, because it is characteristics of source.