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Sahay Sir > Question Answers > Arihant Physics by D.C Pandey > Volume 1 > Chapter 17 - Wave Motion > An engine driver moving towards a wall with a velocity of 50 ms^−1 emits a note of frequency 1.2 kHz. The frequency of note after reflection from the wall as heard by the engine driver when the speed of sound in air is 350 ms^−1 is

An engine driver moving towards a wall with a velocity of 50 ms^−1 emits a note of frequency 1.2 kHz. The frequency of note after reflection from the wall as heard by the engine driver when the speed of sound in air is 350 ms^−1 is

A transverse periodic wave on a string with a mass density of 0.200 kg/m is described by the following equation y=0.05sin(420t−21.0x) where x and y are in meters and t is in seconds. Tension in the string is