Simple Harmonic Motion and Waves
At one end of a ripple tank 90 cm across, a 6Hz vibrator produces waves whose wavelength is 30 mm. The time needed to cross the waves is
3 seconds
7 seconds
10 seconds
5 seconds
5 seconds
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The number of vibrations of a body in one sec is calledA. frequency
B. amplitude
C. time period
D. vibration
A human ear can oscillate back and forth up to
A. 18,000 times per second
B. 200 times per second
C. 20,000 times per second
D. 100 times per second
The force that pulls the mass towards mean position is called
A. Gravitational force
B. Frictional force
C. Torque
D. Restoring force
If the spring is stretched or compressed through a small displacement x from its mean position, then on mass it exerts a
A. strain
B. stress
C. energy
D. force
Time taken by a body to complete one vibration is
A. amplitude
B. frequency
C. time period
D. vibration
Heatwaves are
A. electromagnetic
B. mechanical
C. transverse
D. chemical waves
If 160 waves pass through a point of a medium in 40 seconds. Its frequency is
A. 4 Hz
B. 2 Hz
C. 5 Hz
D. 3 Hz
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