NEET UG PHYSICS MCQ: WAVES

1 Medium

1 of 1

Application +4 | -1

A tuning fork of frequency

512 \mathrm{~Hz}

is vibrated with a sonometer wire and 6 beats per second are heard. The beat frequency reduces if the tension in the string is slightly increased. The original frequency of vibration of the string is

View answer and explanation

Correct option: A

506 \mathrm{~Hz}

Option A (

506 \mathrm{~Hz}

) is correct because when the tension increases, the frequency increases, meaning the original frequency was lower than the tuning fork's frequency.

More Questions from WAVES

Practice All Chapter MCQs →

1000\,\,Hz

sound wave in air strikes the surface of a lake and penetrates into water. If speed of sound in water is

1500\,\,\mathrm{m}{\mathrm{s}^{ - 1}}

, the frequency and wavelength of waves in water are The equation for spherical progressive wave is (where

r

is the distance from the source) One metre long tube, closed at both ends, is lying horizontally. A mercury column of length 0.1m is filled in its middle and in rest two parts air is filled at atmospheric pressure. When tube is turned to vertical position, then displacement of mercury will be (standard pressure = 0.76 m of Hg) A tuning fork produces waves in a medium. If the temperature of the medium changes, then which of the following will change In a stationary wave all the particles A SONAR system fixed in a submarine operates at a frequency

40.0 \mathrm{kHz}

. An enemy submarine moves towards the SONAR with a speed of

360 \mathrm{~km} / \mathrm{h}

. What is the frequency of sound reflected by a submarine? Take the speed of sound in water to be

1450 \mathrm{~m} / \mathrm{s}