A tuning fork of frequency \( 440 \mathrm{~Hz} \) is moving with a velocity of \( 3 \mathrm{~m} ... VIDEO
A tuning fork of frequency \( 440 \mathrm{~Hz} \) is moving with a velocity of \( 3 \mathrm{~m} \mathrm{~s}^{-1} \) towards a wall. What will be the number of beats heard between direct and reflected sounds? Take speed of sound as \( 330 \mathrm{~m} \mathrm{~s}^{-1} \)
W
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live
Other Videos By PW Solutions 2022-12-13 Describe the following with suitable examples: 2022-12-13 Define synergism. (P) 2022-12-13 Find the foci, vertices, directrices and axes of following parabolas. Also draw their rough sket... 2022-12-13 Photochemical smog is oxidising / reducing in nature. P 2022-12-13 A \( 24 \mathrm{~V} \) battery of internal resistance \( 4 \Omega \) is connected to a variable ... 2022-12-13 Consider a source moving towards an observer at the speed \( \left(v_{\mathrm{S}}\right) \) of \... 2022-12-13 A given element in a star is giving out radiations of certain wavelength. The wavelength, when s... 2022-12-13 Find the foci, vertices, directrices and axes of following parabolas. Also draw their rough sket... 2022-12-13 Calculate the oxidation number of sulphur in \( \mathrm{H}_{2} \mathrm{SO}_{5} \).
Suggest struc... 2022-12-13 The spectral line of \( \lambda=5,000 \AA \) in the light coming from a distant star is observed... 2022-12-13 A tuning fork of frequency \( 440 \mathrm{~Hz} \) is moving with a velocity of \( 3 \mathrm{~m} ... 2022-12-13 Find two positive numbers whose product is 49 and their sum is minimum. W 2022-12-13 A bus is moving towards a huge wall with a velocity of \( 4 \mathrm{~m} \mathrm{~s}^{-1} \). The... 2022-12-13 Find the points on the curve \( y=3 x^{2}-9 x+8 \) at which the tangents are equally inclined to... 2022-12-13 Determine the area under the curve \( y=\sqrt{a^{2}-x^{2}} \) included between the lines \( x=0 ... 2022-12-13 Has the function \( f(x)=x^{n} \) minimum value at \( x= \) \[ \frac{1}{e} \text { ? } \] P 2022-12-13 If \( f(x)=x^{3} \tan x+3 x^{4} \sin x \), find its derivative at \( x=0 \) and \( x=\frac{\pi}{... 2022-12-13 Find the derivative of the following from first principles: \[ x^{2} \cos x \] \( \mathrm{P} \) 2022-12-13 Evaluate the following limits :
\[
\lim _{x \rightarrow \frac{\pi}{2}} \frac{2^{-\cos x}-1}{x\le... 2022-12-13 What are the maximum and minimum values, if any, of \( f(x)=x, x \in(0,1) \) ? P 2022-12-13 What is the absolute minimum value of \( y=x^{2}-3 x \) in \( [0,2] \) ? \( \mathrm{P} \)