NEET Physics Oscillations MCQs Set A

a)

b)

c) periodic but not simple harmonic

d) non-periodic

Answer:

Question:

a) periodic but not simple harmonic

b) non-periodic

c)

d)

Answer: periodic but not simple harmonic

Question:  The relation between acceleration and displacement of four particles are given below. Which, one of the particle is exempting simple harmonic motion?

a)

b)

c)

d)

Answer:

Question:  Motion of an oscillating liquid column in a U-tube is

a) simple harmonic and time period is independent of the density of the liquid

b) simple harmonic and time period is directly proportional to the density of the liquid

c) non-periodic

d) periodic but not simple harmonic

Answer:  simple harmonic and time period is independent of the density of the liquid

Question:

a) a circle

b) an ellipse

c) a parabola

d) a straight line

Answer: a circle

Question:

a)

b)

c)  The motion is oscillatory but not SHM

d)

Answer:

Question:

a) C will vibrate with maximum amplitude

b) B will vibrate with maximum amplitude

c) All the four will oscillate with equal amplitude

d) D will vibrate with maximum amplitude

Answer: C will vibrate with maximum amplitude

Question:  Figure shows the circular motion of a particle. The radius of the circle, the period, sense of revolution and the initial position are indicated on the figure. The simple harmonic motion of the x-projection of the radius vector of the rotating particle P is

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:

a) oscillatory but not periodic

b) neither periodic nor oscillatory

c) periodic and oscillatory

d) periodic but not oscillatory

Answer:  oscillatory but not periodic

Question:

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:  Resonance is an example of

a) forced vibration

b) damped vibration

c) tuning fork

d) free vibration

Answer:  forced vibration

Question:

a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion

b) Assertion is correct, reason is incorrect

c) Assertion is incorrect, reason is correct

d) Assertion is correct, reason is correct; reason is a correct explanation for assertion

Answer:  Assertion is correct, reason is correct; reason is not a correct explanation for assertion

Question:

a)

b)

c) amplitude of motion is 3a

d) amplitude of motion is 4a

Answer:

Question:  At the corners of an equilateral triangle of side a (1 metre), three point charges are placed (each of 0.1 C). If this system is supplied energy at the rate of 1 kw, then calculate the time required to move one of the mid-point of the line joining the other two.

a) 50 h

b) 60 h

c) 48 h

d) 54 h

Answer: 50 h

Question:

a)

b)

c)

d)

Answer:

More Questions.....................................

Question:   Two particles are executing S.H.M. of same amplitude and frequency along the same straight line path. They pass each other when going in opposite directions, each time their displacement is half of their amplitude. What is the phase difference between them ?

a)

b)

c)

d)

Answer:

Question:   For a simple pendulum, a graph is plotted between its kinetic energy (KE) and potential energy (PE) against its displacement d. Which one of the following represents these correctly? (graphs are schematic and not drawn to scale)

a)

b)

c)

d)

Answer:

Question:  The displacement of a particle is given at time t, by:

a)

b)

c)

d) the motion of the particle is a periodic

Answer:

Question:  A load of mass m falls from a height h on to the scale pan hung from the spring as shown in the figure. If the spring constant is k and mass of the scale pan is zero and the mass m does not bounce relative to the pan, then the amplitude of vibration is

a)

b)

c)

d)

Answer:

Question:  The period of oscillation of a mass M suspended from a spring of negligible mass is T. If along with it another mass M is also suspended, the period of oscillation will now be

a)

b)

c) T

d) 2T

Answer:

Question:

a)

b)

c) amplitude of motion is 3a

d) amplitude of motion is 4a.

Answer:

Question:

a)

b)

c)

d) 3A

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:    A 1 kg mass is attached to a spring of force constant 600 N/m and rests on a smooth horizontal surface with other end of the spring tied to wall as shown in figure. A second mass of 0.5 kg slides along the surface towards the first at 3m/s. If the masses make a perfectly inelastic collision, then find amplitude and time period of oscillation of combined mass.

a)

b)

c)

d)

Answer:

Question:  A point particle of mass 0.1 kg is executing S.H.M. of amplitude of 0.1 m. When the particle passes through the mean position, its kinetic energy is 8 × 10^–3 Joule. Obtain the equation of motion of this particle if this initial phase of oscillation is 45^º.

a)

b)

c)

d)

Answer:

Question:    A particle executes linear simple harmonic motion with anamplitude of 3 cm. When the particle is at 2 cm from the mean position, the magnitude of its velocity is equal to that of its acceleration. Then its time period in seconds is

a)

b)

c)

d)

Answer:

Question:

a) 1 : 11

b) 1 : 14

c) 1 : 6

d) 1 : 9

Answer:  1 : 11

Question:

a) 0.729

b) 0.6

c) 0.81

d) 0.7

Answer: 0.729

Question:  A particle is executing simple harmonic motion with a time period T. At time t = 0, it is at its position of equilibrium. The kinetic energy-time graph of the particle will look like:

a)

b)

c)

d)

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:  A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m/s2 at a distance of 5 m from the mean position. The time period of oscillation is

a)

b)

c) 1 s

d) 2 s

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:   A particle of mass is executing oscillations about the origin on the x-axis. Its potential energy is V(x) = k | x |³, where k is a positive constant. If the amplitude of oscillation is a, then its time period T is

a)

b)

c)

d) None of these

Answer:

Question:

Assertion : If the amplitude of a simple harmonic oscillator is doubled, its total energy becomes four times.
 Reason : The total energy is directly proportional to the square of the amplitude of vibration of the harmonicoscillator

a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion

b) Assertion is correct, reason is incorrect

c) Assertion is incorrect, reason is correct

d) Assertion is correct, reason is correct; reason is a correct explanation for assertion.

Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion

Question:  A silver atom in a solid oscillates in simple harmonic motion in some direction with a frequency of 10¹²/sec. What is the force constant of the bonds connecting one atom with the other? (Mole wt. of silver = 10⁸ and Avagadro number = 6.02 ×10²³ gm mole ^–1) 

a) 7.1 N/m

b) 2.2 N/m

c) 5.5 N/m

d) 6.4 N/m

Answer: 7.1 N/m

Question:  A simple pendulum attached to the ceiling of a stationary lift has a time period T. The distance y covered by the lift moving upwards varies with time t as y = t² where y is in metres and t in seconds. If g = 10 m/s², the time period of pendulum will be

a)

b)

c)

d)

Answer:

Question:  A simple harmonic motion along the x-axis has the following properties : amplitude = 0.5 m, the time to go from one extreme position to other is 2 s and x = 0.3 m at t = 0.5 s. The general equation of the simple harmonic motion is

a)

b)

c)

d) None of these

Answer:

Question:

a)

b)

c)

d) None of these

Answer:

Question:

a)

b)

c)

d)

Answer:

Question:   Two simple pendulums of length 0.5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed oscillations [nT₁=(n–1)T₂, where T₁ is time period of shorter length & T₂ be time period of longer wavelength and n are no. of oscillations completed]

a) 1

b) 5

c) 2

d) 3

Answer:  1

Question:

a)

b)

c)

d)

Answer:

Question:  If the mass shown in figure is slightly displaced and then let go, then the system shall oscillate with a time period of

a)

b)

c)

d)

Answer:

Question:   A 1 kg block attached to a spring vibrates with a frequency of 1 Hz on a frictionless horizontal table. Two springs identical to the original spring are attached in parallel to an 8 kg block placed on the same table. So, the frequency of vibration of the 8 kg block is :

a)

b)

c)

d) 2 Hz

Answer:

Question:  In an engine the piston undergoes vertical simple harmonic motion with amplitude 7 cm. A washer rests on top of the piston and moves with it. The motor speed is slowly increased. The frequency of the piston at which the washer no longer stays in contact with the piston, is close to

a) 1.9 Hz

b) 1.2 Hz

c) 0.1 Hz

d) 0.7 Hz

Answer: 1.9 Hz

Question:  Two bodies of masses 1 kg and 4 kg are connected to a vertical spring, as shown in the figure. The smaller mass executes simple harmonic motion of angular frequency 25 rad/s, and amplitude 1.6 cm while the bigger mass remains stationary on the ground. The maximum force exerted by the system on the floor is (take g = 10 ms^–2)

a) 60 N

b) 40 N

c) 10 N

d) 20 N

Answer:  60 N

Question:

a)

b)

c)

d)

Answer:

Question:

a) increases by 8%

b) decreases by 8%

c) increases by 1%

d) decreases by 1%

Answer:  increases by 8%

Question:

a)

b)

c)

d)

Answer: