MHT CET · Physics · Waves and Sound
A progressive wave of frequency \(50 \mathrm{~Hz}\) is travelling with velocity \(350 \mathrm{~m} / \mathrm{s}\) through a medium. The change in phase at a given time interval of \(0 \cdot 01 \mathrm{~s}\) is
- A \(\frac{\pi}{2} \mathrm{rad}\)
- B \(\pi\) rad
- C \(\frac{\pi}{4}\) rad
- D \(\frac{3 \pi}{2} r a d\)
Answer & Solution
Correct Answer
(B) \(\pi\) rad
Step-by-step Solution
Detailed explanation
\(\lambda=\frac{350}{50}=7 m\)
\(x=\text { velocity } \times \text { time }=350 \times 0.01=3.5 m\)
Phase change \(\frac{2 \pi x}{\lambda}=\frac{2 \pi}{7} \times 3.5=\pi\) radian
\(x=\text { velocity } \times \text { time }=350 \times 0.01=3.5 m\)
Phase change \(\frac{2 \pi x}{\lambda}=\frac{2 \pi}{7} \times 3.5=\pi\) radian
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- A simple pendulum has time period ' \(\mathrm{T}_1\) '. The point of suspension is now moved upward according to equation \(\mathrm{y}=\mathrm{kt}^2\) where \(\mathrm{k}=1 \mathrm{~m} / \mathrm{s}^2\). If new time period is ' \(\mathrm{T}_2\) ' then \(\frac{\mathrm{T}_1^2}{\mathrm{T}_2^2}\) will be \(\left(\mathrm{g}=10 \mathrm{~m} / \mathrm{s}^2\right)\)MHT CET 2025 Medium
- What is change in volume of an iron sphere of volume \(500 \mathrm{~cm}^3\), when it is heated from \(0^{\circ} \mathrm{C}\) to \(\left(\alpha_{\text {Iron }}=12 \times 10^{-6 /{ }^{\circ}} \mathrm{C}\right)\) ?MHT CET 2022 Medium
- A galvanometer may be converted into ammeter or a voltmeter. In which of the following cases the resistance of the device so obtained will be the largest?MHT CET 2024 Easy
- On closing an open organ pipe from one end, it is noticed that the frequency of third harmonic is \(50 \mathrm{~Hz}\) more than the fundamental frequency of vibration in open organ pipe. The fundamental frequency of open organ pipe isMHT CET 2022 Medium
- The kinetic energy of an electron is increased by 2 times, then the de-Broglie wavelength associated with it changes by a factor.MHT CET 2024 Hard
- A graph is plotted between the fringe-width (z) and the distance (D) between the slit and eye-piece, keeping other adjustment same. The correct graph is
MHT CET 2020 Easy
More PYQs from MHT CET
- The magnifying power of a refracting type of astronomical telescope is ' \(\mathrm{m}\) '. If focal length of eyepiece is doubled then the magnifying power will becomeMHT CET 2021 Easy
- Which one of the following is NOT a characteristic feature of Addison's disease?MHT CET 2025 Medium
- Which from following amines on heating with chloroform and ethanolic potassium hydroxide produces foul smell?MHT CET 2025 Medium
- The resultant gate and its Boolean expression in the given circuit is
MHT CET 2021 Medium - \(M\) and \(N\) are the mid points of the diagonals \(A C\) and \(B D\) respectively of quadrilateral \(A B C D,\) then
\(\overrightarrow{A B}+\overrightarrow{A D}+\overrightarrow{C B}+\overrightarrow{C D}=\)MHT CET 2016 Medium - If dielectric is inserted in charged capacitor (battery removed), then quantity that remains constant isMHT CET 2009 Medium