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Senior High School: 11th and 12th Grade
Physics
Physics - The Wave Equation
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Q.1
Wave frequency is measured in which unit?
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Hertz
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Seconds
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Wave-seconds
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Gauss
Q.2
A keyboard player plays a note of 440 Hz. What does this mean?
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It is painfully loud
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It cannot be heard by human ears
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440 waves reach the listener's ear each second
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It has an amplitude of 440 cm
Q.3
If a wave of 440 Hz travels at 340 m/s, what is its wavelength?
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0.772 m
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0.772 Hz
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1.29 m
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14.96 km
Q.4
What is the wavelength of the microwaves used by a cell phone operator that uses microwaves with a frequency of 1.8 x 10 Hz and which travel at a speed of 3.0 x 10 m/s to transmit their signals?
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17 cm
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17 m
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1.7 cm
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1.7 m
Q.5
Electromagnetic waves travel through space at a speed of 3.0 x 10 m/s. The radio waves emitted from a distant galaxy have a wavelength of 25 meters. What is the frequency of the radio waves emitted from the galaxy?
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8.33 MHz
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8.33 x 108 Hz
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12 MHz
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12 mhz
Q.6
Electromagnetic waves travel at a speed of 3.0 x 10 m/s through the air. A radio station transmits using waves with a wavelength of 1.9 x 10 m. At what frequency would you need to set your radio to receive this particular station's programs?
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1578 m
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1578 Mhz
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1578 kHz
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1.578 kHz
Q.7
A group of students carried out an experiment using a ripple tank. They measured the frequency of a wave as being 14 Hz with a total of 20 wave crests in the tank. The tank was 40 cm long. How fast was the wave traveling?
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28 m/s
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2.8 m/s
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0.28 cm/s
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0.28 m/s
Q.8
What is the wavelength of the musical note middle C? It has a frequency 256 Hz and the speed of sound is 335 m/s.
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131 cm
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13.1 m
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0.76 m
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7.6 cm
Q.9
Waves are diffracted when they pass through a gap that is about the same width as their wavelength. What width of gap would be required to cause microwaves of frequency 1.5 x 10 Hz to diffract?
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1 m
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2 cm
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3 km
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4 mm
Q.10
Snakes swim by vibrating their body from side to side, just like a transverse wave. The faster they vibrate, the faster they move through the water. A 90 cm long snake in a lake travels with a velocity of 1.8 m/s. At what frequency does it vibrate its body?
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1 Hz
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2 Hz
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3 Hz
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4 Hz
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