• If ten waves from one source 'A' have the same length as eleven waves from another source 'B', number of beats produced in 10 seconds will be
    A) 10 B) 5 C) 1 D) none of these
  • Ten waves from one source 'A' have the same length as eleven waves from another source 'B'. If the frequency of the first source is n, number of beats registered every second will be
    A) n B) 1.1n C) 0.9n D) 0.1n
  • A particle receives waves from two sources of unequal frequencies. The phase difference between the vibrations produced by individual waves
    A) remains same at all times
    B) varies with time between 0 and π
    C) varies with time between 0 and π/2
    D) varies with time between π/2 and π
  • A particle receives waves from two sources of unequal frequencies. Amplitudes of vibrations due to individual sources are equal to A each. The amplitude of the resulting vibrations
    A) varies between 0 and A
    B) 2A
    C) varies between A and 2A
    D) varies between 0 and 2A
  • A particle receives waves from two sources of equal frequencies. Amplitudes of vibrations due to individual sources are equal to A and 2A. The amplitude of the resulting vibrations
    A) is between A and 3A, and varies with time
    B) is between 0 and 2A, does not vary with time
    C) is between A and 3A, does not vary with time
    D) is between 0 and 2A varies with time
  • A particle receives waves from two sources of unequal frequencies. Amplitudes of vibrations due to individual sources are equal to A and 2A. The amplitude of the resulting vibrations
    A) varies between A and 2A with time
    B) varies between 0 and 2A with time
    C) varies between A and 3A with time
    D) varies between 0 and 3A with time