Chap.7 Osillation MCQs with Solution

Osscilation

1)	The S.I units of spring constant are:    a) 𝑚−1                                 b) 𝑁𝑚−1    c) 𝑁𝑚−2                             d) 𝑁𝑚2	B
2)	If 𝐹 = 0.08 𝑁 and 𝑥 = 4 𝑐𝑚 then 𝑘 =:      a) 6 𝑁𝑚−1                          b) 4 𝑁𝑚−1      c) 8 𝑁𝑚−1                          d) 2 𝑁𝑚−1	D
3)	One complete round trip of a vibrating   body is called    a) Time period                 b) Frequency    c) Vibration                      d) Amplitude	C
4)	The time required to complete one   vibration is called    a) Time period                 b) Frequency    c) Time period                 d) Velocity	A
5)	The force which opposes the applied force    producing the displacement in the spring is    called     a) Restoring force           b) Periodic force     c) Centripetal force        d) Resistive force	A
6)	The number of vibrations completed by a    body in one second is called     a) Time period                 b) Frequency     c) Total vibrations         d) Displacement	B
7)	Simple harmonic motion is a type of:    a) Rotational motion    b) Circular motion    c) Musical arrangement    d) Vibratory motion	D
8)	In SHM, the restoring force is directly   proportional to    a) Velocity                         b) Acceleration    c) Displacement              d) Time period	C
9)	The expression for instantaneous displacement of particle executing SHM    is:     a) 𝑎 = −𝜔2 𝑥                       b) 𝑥 = 𝑥0 sin 𝜔𝑡     c) 𝐹 = 𝑘𝑥                              d) All of above	B
10)	Acceleration of a projection on the    diameter for a particle moving along a    circle is:     a) w2x                                  b) wx2     c) –w2x                               d) –wx2	C
11)	In equation of SHM, 𝑎 = −𝜔2 𝑥, the    negative sign indicates the direction of    motion of particle     a) Away from mean position     b) Perpendicular to mean position     c) Towards mean position     d) None of above	C
12)	If f is the frequency of a body executing    SHM, its angular frequency 𝜔 is:     a) 4𝜋𝑓                  b) 3𝜋𝑓     c) 2𝜋𝑓                  d) None of these	C
13)	The distance of vibrating body at any    instant from its equilibrium position is    called     a) Displacement              b) Frequency     c) Amplitude                     d) Time period	A
14)	SI unit of frequency is:     a) Radian                            b) 𝑚𝑠 −1     c) Hertz                               d) Meter	C
15)	The product of time period and frequency    is:     a) Zero                             b) 1     c) 𝜋                                    d) None of these	B
16)	The phase angle 𝜃 = 𝜔𝑡 of the body    performing SHM indicates:     a) Only direction of motion     b) Only magnitude of displacement     c) Both magnitude of displacement and     direction of motion     d) None of these	C
17)	In SHM, the velocity of the particle is    maximum at:     a) Mean position     b) Extreme position     c) In between mean and extreme position     d) None	A
18)	Angular velocity of vibrating body    attached with horizontal mass spring    system is given by: b) w=                                 b)  w= c)   w=                             d)  w=	C
19)	For a body executing S.H.M, its     a) Momentum remains constant     b) Potential energy remains constant     c) Kinetic energy remains constant     d) Total energy remains constant	D
20)	If the displacement of a body executing    S.H.M is plotted against time, then the    curve is known     a) Frequency of S.H.M     b) Period of S.H.M     c) Wave form     d) None of them	C
21)	The waveform of simple harmonic motion    is:     a) Sine wave                      b) Square wave     c) Pulsed wave                d) None of these	A
22)	Frequency of the second pendulum is:     a) 2.5 Hz                              b) 0.5 Hz     c) 1.5 Hz                              d) 2 Hz	B
23)	The time period of a second pendulum is-     a) 4 seconds                      b) 3 seconds     c) 2 seconds                      d) 6 seconds	C
24)	The length of second pendulum is.     a) 100 cm                           b) 99 cm     c) 99.2 cm                          d) 98 cm	C
25)	The restoring force acting on simple    pendulum is given by.     a) mg sin θ                         b) – mg sin θ     c) mg cos θ                        d) – mg cos θ	B
26)	An object undergoes S.H.M has maximum    speed when its displacement from the    mean position is     a) Maximum speed     b) Zero     c) Half of the maximum value     d) One third of the maximum value	C
27)	An object undergoes S.H.M has maximum    acceleration when its displacement form    the mean position is     a) Maximum     b) Zero     c) Half of the maximum value     d) One third of the maximum value	B
28)	In simple harmonic motion:     a) P.E remains constant     b) K.E remain constant     c) Total energy remain constant     d) Total momentum remain constant	C
29)	An object undergoes S.H.M has maximum    acceleration when its displacement form    the mean position is     a) Maximum     b) Zero     c) Half of the maximum value     d) One third of the maximum value	B
30)	The motion of simple pendulum is SHM only if:     a) Amplitude is large     b) Mass is small     c) Amplitude is small     d) Length is small	A
31)	In S.H.M, the velocity of a particle is    maximum at:     a) Mean position     b) Extreme position     c) Middle between mean and extreme    position on the right side     d) Middle between mean and extreme    position on the left side	C