Waves & Sound · JEE Main previous year questions

2002 2 questions

1. Q1092002 · 27 Apr 2002 · Shift 1

   A tuning fork arrangement (pair) produces $4$ beats/sec with one fork of frequency $288\mathrm{cps}$. A little wax is placed on the unknown fork and it then produces $2$ beats/sec. The frequency of the unknown fork is

   1. A.$286\mathrm{cps}$
   2. B.$292\mathrm{cps}$
   3. C.$294\mathrm{cps}$
   4. D.$288\mathrm{cps}$
   Show answer

   Answer: B

2. Q1112002 · 27 Apr 2002 · Shift 1

   When temperature increases, the frequency of a tuning fork

   1. A.increases
   2. B.decreases
   3. C.remains same
   4. D.increases or decreases depending on the material
   Show answer

   Answer: B