Exploring The Electromagnetic Spectrum: Energy, Wavelength, And Frequency

This video tutorial covers the electromagnetic spectrum, explaining the properties of electromagnetic waves, including their speed, wavelength, and frequency. It discusses how energy is related to frequency and introduces Planck's constant. The video includes practice problems to reinforce understanding of these concepts, focusing on calculating wavelength, frequency, and energy of photons, particularly in the context of UVA radiation.

What is the speed of light in a vacuum?

• 3 x 10^4 meters per second

• 3 x 10^10 meters per second

• 3 x 10^6 meters per second

• 3 x 10^8 meters per second

Which type of electromagnetic radiation has the longest wavelength?

• Visible light

• UV radiation

• Microwaves

• X-rays

As you move towards gamma rays in the electromagnetic spectrum, what happens to the frequency?

• It decreases

• It remains constant

• It increases

• It fluctuates

What is Planck's constant?

• 6.626 x 10^-34 newtons

• 6.626 x 10^-34 joules seconds

• 6.626 x 10^-34 meters

• 6.626 x 10^-34 watts

Which of the following has the highest frequency?

• Radio waves

• UV radiation

• Infrared radiation

• X-rays

Among the colors of visible light, which one has the highest energy?

• Red

• Green

• Blue

• Yellow

How do you calculate the frequency of a photon given its wavelength?

• Divide speed of light by wavelength

• Subtract speed of light from wavelength

• Add speed of light to wavelength

• Multiply speed of light by wavelength

What is the energy of a photon with a frequency of 1.5 x 10^15 Hz?

• 9.939 x 10^-19 joules

• 9.939 x 10^-20 joules

• 9.939 x 10^-17 joules

• 9.939 x 10^-18 joules

How many electron volts is equivalent to 1.6 x 10^-19 joules?

• 1 electron volt

• 2 electron volts

• 0.5 electron volts

• 1.5 electron volts

What is the energy of a UVA photon with a wavelength of 200 nanometers in electron volts?

• 4.2 electron volts

• 5.2 electron volts

• 7.2 electron volts

• 6.2 electron volts