wiz-icon
MyQuestionIcon
MyQuestionIcon
7
You visited us 7 times! Enjoying our articles? Unlock Full Access!
Question

A source of sound A emitting waves of frequency 1800 Hz is falling towards ground with a terminal speed v. The observer B on the ground directly beneath the source receives wave of frequency 2150hz. The source A receives waves, reflected from frequency nearly: (Speed of sound = 343 m/s)

A
2150 Hz
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
2500Hz
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
1800Hz
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
2400Hz
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is D 2500Hz
Frequency received by source A is
f=1800(343+V343V)
forV;
2150=1800(343343V)
343V=1800×3432150
V=56m/s
f=1800(399287)2500Hz

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon