wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A bat flies perpendicular to a wall at 6m/s, emitting a sound of frequency 4.5×104 Hz. The number of beats it hears per second is (velocity of sound in air =340m/s)

A
21.37
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1200
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
1616
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
92.7
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 1616
Given : v=340 m/s

vs=6 m/s

δ=4.5×104 Hz

v0=6 m/s

By doppler effect formula

δ=δ(vv0vv3)

=4.5×104(340(6)3406)

=4.5×104(346334)

=46616

Beats =δδ

=4661645000

=1616

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