Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 2005
Exam
JEE Main
Year
2005
Subject
Physics
Chapter
Waves and Sound

JEE Main 2005 · Physics · Waves and Sound

When two tuning forks (fork 1 and fork 2) are sounded...

When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now, some tape is attached on the prong of the fork 2 . When the tuning forks are sounded again, 6 beats per seconds are heard. If the frequency of fork 1 is 200 Hz200 \mathrm{~Hz}, then what was the original frequency of fork 2 ?

Options

  1. A200 Hz200 \mathrm{~Hz}
  2. B202 Hz202 \mathrm{~Hz}
  3. C196 Hz196 \mathrm{~Hz}
  4. D204 Hz204 \mathrm{~Hz}

Correct answer

C. 196 Hz196 \mathrm{~Hz}

Step-by-step solution

\left|f_1-f_2\right|=4 Since mass of second tuning fork increases sof_2decreaseandbeatsincreasesodecrease and beats increase sof1>f2⇒f2=f1−4=196\begin{aligned}& f_1>f_2 \\ & \Rightarrow f_2=f_1-4=196 \end{aligned}$
Practice Waves and Sound on Quantrex Academy →

More from Waves and Sound

List-I shows four configurations made of straight and semi-circular narrow tubes… JEE Advanced 2026A transverse wave on a string is described by y = 3 (36t + 0.018x + π/4) , where x, y are… JEE Main 2026The equation of a plane progressive wave is given by y = 5 π(200t - (x)/(150)) where x… JEE Main 2026The speed of a longitudinal wave in a metallic bar is 400 ~m / s . If the density and… JEE Main 2026Two tuning forks A and B are sounded together giving rise to 8 beats in 2 s. When fork A… JEE Main 2026A point source is kept at the center of a spherically enclosed detector. If the volume of… JEE Main 2026The fifth harmonic of a closed organ pipe is found to be in unison with the first… JEE Main 2026The velocity of sound in air is doubled when the temperature is raised from 0^ ∘ C to α^… JEE Main 2026 Full Waves and Sound list All JEE Main PYQs