Competitive Exams: Physics MCQs (Practice-Test 19 of 35)

  1. The particles of a medium oscillate about their equilibrium positions, whenever a wave travels through that medium, The phase difference between the oscillations of two such particles varies

    1. with time but not with distance separating them

    2. with distance separating them but not with time

    3. with distance separating them as well as with time

    4. neither with distance separating them nor with time

  2. A mass of 1 kg suspended from a spring whose force constant is 400 Nm-1, executes simple harmonic oscillation. When the total energy of the oscillator is 2 J, the maximum acceleration experienced by the mass will be

    1. 2 ms-2

    2. 4 ms-2

    3. 40 ms-2

    4. 400 ms-2

  3. Consider the following statements: The total energy of a particle executing simple harmonic motion depends on its

    1. amplitude.

    2. period

    3. displacement

    Of these statements:

    1. 1 and 2 are correct

    2. 2 and 3 are correct

    3. 1 and 3 are correct

    4. 1, 2 and 3 are correct

  4. Three simple harmonic oscillators, with amplitudes A1 > A2> A3, pass through their respective equilibrium positions with the same velocity. If these oscillators have the same mass, then their characteristic frequencies w1, w2, w3 will be related to each other as.

    1. w1 A1 = w2 A2 = w3 A3

    2. w1 2 A1 = w2 2 A2 = w3 2 A3

    3. w1 A1 2 = w2 A2 2 = w3 2 A32

    4. (w1/A1) = (w2/A2) = (w3/A3)

  5. Two simple harmonic waves of the same amplitude and frequency differ by a phase p/2 When they are fed simultaneously to the X-and y-plates of C. R. O. the screen would display the trace of

    1. a circle

    2. an ellipse

    3. a straight line

    4. a square

  6. The amplitude of the vibrating particle due to superposition of two SHMs yl = sin (wt + p/3) and y2 = sin wt

    1. 1

    2. 2 ½

    3. 3 ½

    4. 2