Electromagnetism Worksheet #1
Frequency, Wavelength & The Speed of Light
 1 What is meant by the "frequency of light"?  What symbol is used for it, and what is the SI unit for frequency? 2 Sketch a diagram of a wave and label its wavelength and its amplitude. 3 Give the equation that relates the wavelength and frequency of a light wave to the speed of light. 4 What is the frequency in hertz of blue light having a wavelength of 425 nm? 5 Ozone protects the earth's inhabitants from the harmful effects of ultraviolet light arriving  from the sun. This shielding is a maximum for UV light having a wavelength of 295 nm. What is the frequency in hertz of this particular wavelength of UV light? 6 Radar signals are also part of the electromagnetic spectrum in the microwave region.  A typical radar signal has a wavelength of 3.19 cm. What is the frequency in hertz? 7 FM radio dials are calibrated in frequency.  In Ottawa, the radio station MAGIC 100 broadcasts its FM signal at a frequency of 101.1 megahertz (MHz). What is the wavelength of this signal in meters? 8 Sodium vapour lamps are often used in residential street lighting. They give off a yellow light having a frequency of 5.09 X 1014 Hz. What is the wavelength of this signal in nanometers? 9 AM radio dials are calibrated in frequency. A certain AM Brockville radio station broadcasts at a frequency of 830 kHz.  What is the wavelength of these radiowaves expressed in meters? 10 Some earthquake waves travel at 5 km/sec.  What is the wavelength of these waves if the earth tremors are 10 per second?