Understanding Light Waves

What is the definition of light as a wave?

• A particle that travels in a straight line.

• An electromagnetic wave that travels through a vacuum.

• A sound wave that requires a medium.

• A reflection of energy from surfaces.

What is the term for the distance between two consecutive peaks of a light wave?

• Frequency

• Amplitude

• Wavelength

• Speed

What unit is commonly used to measure the frequency of light waves?

• Meters (m)

• Hertz (Hz)

• Joules (J)

• Amperes (A)

Which of the following types of electromagnetic radiation has the longest wavelength?

• X-rays

• Ultraviolet

• Radio waves

• Gamma rays

What is the correct order of the electromagnetic spectrum from lowest to highest frequency?

• Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays

• Gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, radio waves

• Infrared, visible light, ultraviolet, X-rays, gamma rays, microwaves, radio waves

• D) Microwaves, radio waves, visible light, infrared, gamma rays, ultraviolet, X-rays

If a light wave has a longer wavelength, what can be inferred about its frequency?

• The frequency is higher.

• The frequency is lower.

• The frequency remains constant.

• The wavelength has no effect on frequency.

In what way does the speed of light in water compare to its speed in a vacuum?

• It is faster in water.

• It is slower in water.

• It is the same in both mediums.

• It varies randomly.

How does the understanding of light as a wave influence the development of technologies such as fiber optics?

• It restricts technology to only electrical signals.

• It allows for the transmission of data through light waves.

• It has no impact on technology.

• It limits the speed of data transmission.

If you were to design an educational tool to demonstrate the properties of light waves, which of the following components would be essential?

• A sound generator.

• A laser pointer and a prism.

• A water tank only.

• A set of mirrors without any light source.

Considering the properties of light waves, how would changing the wavelength of light affect its color and applications in everyday life?

• It would change the brightness but not the color.

• It would affect both color perception and technological applications, like lasers.

• Wavelength changes do not affect color.

• It would only influence its speed.