• A
• B
• C
• D
• #### 2.  The interference that occurs when two waves combine to make a wave with a smaller amplitude.

• constructive interference
• criticism
• destructive interference
• interjection
• #### 3.  Which graph can be used to describe oscillation?

• displacement-time graph
• displacement-length graph
• amplitude-time graph
• time invariant graph
• #### 4.  The combined result of adding the amplitudes of overlapping waves

• vector
• resultant wave
• standing wave

• 0 J
• 120J
• 240J
• 480J

• Amplitude
• Crest
• Trough
• Wavelength

• A
• B & D
• B & F
• F
• #### 8.  An object that has a small mass that is suspended from a wire or string

• simple pendulum
• frequency
• oscillation
• wave

• T/2
• T/√2
• T
• T√2
• 2T
• #### 10.  Given an expression of x = 10 sin (0.25πt) where x in cm, t in second. Which of these answers are true?

• the frequency is 0.125 Hz
• the amplitude is 10 m
• the angular frequency is 0.125 rad s-1
• at t = 0, x = 10 cm

• 8 cm s−1
• 11 cm s−1
• 22 cm s−1
• 36 cm s−1
• #### 12.  A wave that oscillates in a fixed location

• standing wave
• sitting wave
• longitudinal wave
• transverse wave
• #### 13.  Which of the following is not an example of SHM?

• A simple pendulum
• A vibrating spring
• A marble on a concave surface
• Bouncing on a trampoline
• #### 14.  For a SHM, what is the shape of the graph of velocity (v) against displacement (x)?

• straight line
• parabola
• circle
• ellipse
• #### 15.  A mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy?

• kinetic
• mechanical
• gravitational potential
• elastic potential
• #### 16.  Which of the following is not an example of resonance?

• Nuclear magnetic resonance (NMR).
• Heating of food in a microwave oven.
• Skyscrapper sways more and more during earthquake.
• A basketball bounces few times on floor and stops.

• 0.25 Hz
• 0.1 Hz
• 2 Hz
• 10 Hz.
• #### 18.  A see-saw at the playground is

• critically damped
• over-damped
• lightly damped
• not damped
• #### 19.  In a simple pendulum, which force brings the mass back to equilibrium?

• Gravitational force
• Elastic force
• Tension
• Friction
• #### 20.  The period of a pendulum may be decreased by

• Increasing the mass of the bob
• moving the equilibrium point
• decreasing the mass of the bob
• shortening the length of pendulum

• 0.1 J
• 0.4 J
• 0.9 J
• 1.6 J

• 1/3
• 3/8
• 1/2
• 2/3
• 3/4

• 4.8 s
• .96 s
• 9.8 s

• 7.1 cm
• 1.7 cm
• 5.0 cm
• 2.5 cm
• #### 25.  What is meant by forced oscillation?

• When an object is vibrating at its natural frequency
• When an object continues to vibrate after the disturbance is removed
• When an object vibrates at a frequency which is different from its natural frequency
• When an object receives a vibration from external sources

• 0.0 s
• 2.0 s
• 4.0 s
• 8.0 s

• amplitude
• period
• antinode
• node
• #### 28.  The interference that occurs when waves combine to make a wave with a larger amplitude.

• constructive interference
• destructive interference
• wave amplification
• superposition

• 4π2/k2
• 4π2/k
• (4π)(2k)
• k/4π2
• k2/4π2

• amplitude
• crest
• trough
• wavelength
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