When an observer moves toward a stationary source with a certain velocity, he observers an appar... VIDEO
When an observer moves toward a stationary source with a certain velocity, he observers an apparent frequency f. When it moves away from the source with same velocity, the observed frequency is \( 0.8 \mathrm{f} \). If the velocity of sound is \( \mathrm{v} \), then the speed of the observer is
(A) \( \frac{\mathrm{V}}{4} \)
(B) \( \frac{\mathrm{V}}{8} \)
(C) \( \frac{\mathrm{V}}{9} \)
(B) None of these
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions 2023-01-18 A piano wire \( A \) vibrates at a fundamental frequency of \( 600 \mathrm{~Hz} \). A second ide... 2023-01-18 What is the amplitude of motion for the air in the path of a \( 60 \mathrm{~dB}, 800 \mathrm{~Hz... 2023-01-18 During adsorption, the thermodynamic parameters \( \Delta G, \Delta H \) and \( \Delta S \) are ... 2023-01-18 A tuning fork of frequency \( 256 \mathrm{~Hz} \) produces 4 beats per second with a wire of len... 2023-01-18 फलन \( f(x) \), निम्नवत् परिभाषित है-
\( f(x)=1 \) यदि \( x0 \)
\( =-1 \) यदि \( x0 \)
\( =0 \) ... 2023-01-18 (a) In a liquid with density \( 1300 \mathrm{~kg} / \mathrm{m}^{3} \), longitudinal waves with f... 2023-01-18 A gas is a mixture of two parts by volume of hydrogen and one part by volume of nitrogen at \( \... 2023-01-18 A railroad train is travelling at \( 30 \mathrm{~m} / \mathrm{s} \) in still air. The frequency ... 2023-01-18 A locomotive engine approaches a railway station and whistles at a frequency of \( 400 \mathrm{~... 2023-01-18 Two sources of sound \( A \) and \( B \) produce the wave of \( 350 \mathrm{~Hz} \), in the same... 2023-01-18 When an observer moves toward a stationary source with a certain velocity, he observers an appar... 2023-01-18 First overtone frequency of a closed organ pipe is equal to the first overtone frequency of an o... 2023-01-18 The figure shows a snap photograph of a vibrating string at \( t=0 \). The particle \( P \) is o... 2023-01-18 A closed organ pipe and an open organ pipe of same length produce 2 beats when they are set into... 2023-01-18 A glass tube of \( 1.0 \mathrm{~m} \) length is filled with water. The water can be drained out ... 2023-01-18 Two persons \( A \) and \( B \), each carrying a source of frequency \( 300 \mathrm{~Hz} \), are... 2023-01-18 144 बॉल पेनों के एक समूह में 20 बॉल पेन खराब हैं और शेष अच्छे हैं। आप वही पेन खरीदना चाहेंगे जो ... 2023-01-18 A fixed source of sound emitting a certain frequency appears as \( f_{a} \) when the observer is... 2023-01-18 A particle of specific charge \( \alpha \) is projected from origin at \( t=0 \) with a veloci... 2023-01-18 For the wave equation, \( \quad y=(4 \mathrm{~cm}) \sin [\pi t+2 \pi x] \)
\( P \)
Here, \( t \)... 2023-01-18 A tuning fork of frequency \( 340 \mathrm{~Hz} \) is sounded above an organ pipe of length \( 12...