Question 1) Answer all the questions:
a) Briefly explain is quality factor? Also interpret its physical significance.
b) Describe the principle of total internal reflection.
c) Explain the principle of a sonar system.
d) Define acoustic impedance of a medium with appropriate example.
e) What is a musical note? Describe with the help of suitable diagram and example.
Question 2) Demonstrate that the total energy of the system is equal to sum of energies associated with the two modes.
Question 3) Define force constant of a spring. Demonstrate that in S.H.M., the acceleration is directly proportional to its displacement at that given instant.
Question 4) Define elastic potential energy? Derive its expression per unit length?