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1. A certain electromagnetic wave is 5 nanometers (5.0x10-*9) long.(a) what is its frequency?(b) what type of electromagnetic radiation is this?2. The ultraviolet rays that cause sun burn are called UV-B rays. They have a wavelength of approximately 300 nanometers 3.0x10^(-7) m, what is its frequency?3. Infrared rays from the sun are wat make our skin feel warm on sunny day. If an infrared ray has a frequency of 3,0x10*12 HZ, what is it wavelength?4. Electromagnetic waves wit the highest amount of energy are called gamma rays. Gamma rays have wavelengths of less thank 10-trillionths of a meter (1.9=0x10*-11m).(a) Determine the frequency that corresponds with the wavelength.(b) Is this the minimum or maximum frequency of a gamma ray?(c) How much energy does this gamma ray have?

1 A Certain Electromagnetic Wave Is 5 Nanometers 50x109 Longa What Is Its Frequencyb What Type Of Electromagnetic Radiation Is This2 The Ultraviolet Rays That C class=

Answer :

Given that the wavelength is

[tex]\lambda=\text{ 3}\times10^{-7\text{ }}m[/tex]

The speed of rays is

[tex]c=\text{ 3}\times10^8\text{ m/s}[/tex]

We have to find the frequency.

The formula to calculate frequency is

[tex]f=\frac{c}{\lambda}[/tex]

Substituting the values, the frequency will be

[tex]\begin{gathered} f=\frac{3\times10^8}{3\times10^{-7}} \\ =10^{15}\text{ Hz} \end{gathered}[/tex]

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