A stationary source emits sound waves of frequency 500 Hz.
Two observers moving along a line passing through the source
detect sound to be of frequancies 480 Hz and 530 Hz. Their respective speeds
are in m/s,
(Given speed of sound = 300 m/s)
12,16
12,18
16,14
8,18
Frequency of sound when source is stationary and observer is moving towards source. -
- wherein
speed of sound
Speed of observer
original frequency
apparent frequency
Frequency of sound when source is stationary and observer is moving away from source. -
- wherein
speed of sound
Speed of observer
original frequency
apparent frequency
........................(1)
........................(2)
From (1)
From (2)
Option 1)
12,16
Option 2)
12,18
Option 3)
16,14
Option 4)
8,18
Study 40% syllabus and score up to 100% marks in JEE