A source of sound A emitting waves of frequency 1800 Hz is falling towards ground with a terminal speed . The observer B on the ground directly beneath the source receives waves of frequency 2150 Hz. The source A receives waves, reflected from ground, of frequency nearly : (Speed of sound =343 m/s)
2150 Hz
2500 Hz
1800 Hz
2400 Hz
As discussed in @9344
Option 1)
2150 Hz
This option is incorrect.
Option 2)
2500 Hz
This option is correct.
Option 3)
1800 Hz
This option is incorrect.
Option 4)
2400 Hz
This option is incorrect.
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