A train has just completed a U-curve in a track which is a semicirc...

Channel:
PW Solutions
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=P4xc3b6IQG0


Duration: 6:05
9 views
0

A train has just completed a U-curve in a track which is a semicircle. The engine is at forward end of the semicircular part of the track while the last carriage is at the rear
\( \mathrm{P} \) end of the semi-circular track. The driver blows a whistle of frequency \( 200 \mathrm{~Hz} \). Velocity of sound is \( 340 \mathrm{~m} / \mathrm{s} \). Then the apparent frequency as observed by a
W passenger in the middle of the train, when the need of the train is \( 30 \mathrm{~m} / \mathrm{s} \) is
(A) \( 219 \mathrm{~Hz} \)
(B) \( 288 \mathrm{~Hz} \)
(C) \( 200 \mathrm{~Hz} \)
(D) \( 181 \mathrm{~Hz} \)
πŸ“²PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live



Other Videos By PW Solutions


2023-02-13The structure of the noble gas compound \( \mathrm{XeF}_{4} \) is :...
2023-02-13Mark the correct alternative in each of the following: \( A B C D \) is a parallelogram, \( M \)...
2023-02-13The correct structure of 2,6-Dimethyl-dec-4-ene is: (a) (b) VV (c) (d)
2023-02-13Let the function \( f: \mathbf{R} \sim\{-b\} \rightarrow \mathbf{R}...
2023-02-13Differentiate the functions \[ \sqrt{\frac{(x-1)(x-2)}{(x-3)(x-4)(x...
2023-02-13A standing wave having three antinodes and four nodes is formed bet...
2023-02-13Two whistles A and B each have a frequency of \( 500 \mathrm{~Hz} \). A is stationary and \( \ma...
2023-02-13Select the overlapping which has maximum bond strength (internuclea...
2023-02-13The electronic configuration of \( \mathrm{Cu} \) (II) is \( 3 d^{9...
2023-02-13How much time would be required for the \( \mathrm{B} \) to reach m...
2023-02-13A train has just completed a U-curve in a track which is a semicirc...
2023-02-13\( \mathrm{P} \) W A particle moves along the curve \( 6 y=x^{3}+2 ...
2023-02-13Select the correct statement. (a) Treatment of \( \mathrm{AgNO}_{3}...
2023-02-13\( 75 \% \) of a first order reaction occurs in \( 30 \mathrm{~min}...
2023-02-13Which one of the following is not the example of homogeneous catalysis :- \( \mathrm{P} \) (1) F...
2023-02-13A ball of radius \( r \) and density \( \rho \) falls freely under ...
2023-02-13The gravitational field in a region is given by \( \vec{I}=(4 \hat{...
2023-02-13The geometrical arrangement of orbitals and shape of \( \mathrm{I}_...
2023-02-13The ion with highest nucleophilicity is: a. \( \mathrm{F}^{-} \) b....
2023-02-13Which among the following metals is considered as transition metal?...
2023-02-13Rate constants for the reaction : \( \mathrm{NO}_{2}(\mathrm{~g})+\...


Tags:
pw