Chapter: Oscillations
1.

Maximum displacement from equilibrium position is

A. frequency
B. amplitude
C. wavelength
D. period
Answer» B. amplitude
2.

Displacement-time graph depicting an oscillatory motion is

A. cos curve
B. sine curve
C. tangent curve
D. straight line
Answer» B. sine curve
3.

In s.h.m, velocity at equilibrium position is

A. minimum
B. constant
C. maximum
D. zero
Answer» C. maximum
4.

Natural frequency of a guitar string can be changed by changing it's

A. area
B. diameter
C. length
D. stiffness
Answer» C. length
5.

Over-damping results in

A. slower return to equilibrium
B. faster return to equilibrium
C. equilibrium is never achieved
D. arrhythmic return to equilibrium
Answer» A. slower return to equilibrium
6.

Our eyes detect the oscillations up to

A. 8 Hz
B. 9 Hz
C. 6 Hz
D. 5 Hz
Answer» D. 5 Hz
7.

For s.h.m, maximum speed is proportional to

A. wavelength
B. acceleration
C. time
D. frequency
Answer» D. frequency
8.

A force that acts to return the mass to it's equilibrium position is called

A. frictional force
B. restoring force
C. normal force
D. contact force
Answer» B. restoring force
9.

In cars, springs are damped by

A. shock absorbers
B. engine
C. tyres
D. brake pedals
Answer» A. shock absorbers
10.

If time period of an oscillation is 0.40 s, then it's frequency is

A. 2 Hz
B. 2.5 Hz
C. 3 Hz
D. 3.5 Hz
Answer» B. 2.5 Hz
11.

As amplitude of resonant vibrations decreases, degree of damping

A. increases
B. remains same
C. decreases
D. varies
Answer» C. decreases
12.

Oscillations become damped due to

A. normal force
B. friction
C. tangential force
D. parallel force
Answer» B. friction
13.

In s.h.m, object's acceleration depends upon

A. displacement from equilibrium position
B. magnitude of restoring force
C. both A and B
D. force exerted on it
Answer» C. both A and B
14.

angular frequency of s.h.m is equal to

A.
B. 2πf
C. 2f
D. 1⁄T
Answer» B. 2πf
15.

For a resonating system it should oscillate

A. bound
B. only for some time
C. freely
D. for infinite time
Answer» C. freely
16.

Velocity at equilibrium position is

A. constant
B. minimum
C. maximum
D. zero
Answer» C. maximum
17.

If the swing moves from right to left, then velocity is

A. negative
B. positive
C. constant
D. zero
Answer» A. negative
18.

Acceleration is directly related to

A. displacement
B. negative of displacement
C. velocity
D. negative of speed
Answer» B. negative of displacement
19.

Gradient of velocity-time graph gives

A. force
B. frequency
C. wavelength
D. acceleration
Answer» D. acceleration
20.

Magnitude of gradient of a-x graph is {{}}

A. ω
B. ω2
C. ω⁄2
D. ω3
Answer» B. ω2
21.

Potential energy of system is maximum at

A. extreme position
B. mean position
C. in between extreme and mean position
D. moderate position
Answer» A. extreme position
22.

In s.h.m, acceleration is always directed towards the

A. equilibrium position
B. mean position
C. tangent to the motion
D. downwards
Answer» A. equilibrium position
23.

Number of oscillations per unit time is

A. amplitude
B. wavelength
C. frequency
D. period
Answer» C. frequency
24.

When displacement x = 0, then kinetic energy of system is

A. minimum
B. maximum
C. constant
D. zero
Answer» B. maximum
25.

Energy of a system executing s.h.m is

A. increasing
B. decreasing
C. constant
D. variable
Answer» C. constant
26.

Oscillatory motion has a

A. straight lined graph
B. randomly lined graph
C. sinusoidal graph
D. asymptotic graph
Answer» C. sinusoidal graph
27.

During one oscillation, phase of oscillation changes by

A. π rad
B. π⁄2 rad
C. 2π rad
D. 4π rad
Answer» C. 2π rad
28.

If an object moves back and forth repeatedly around a mean position it is called

A. oscillating
B. revolving
C. rotating
D. motion
Answer» A. oscillating
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