Podcast
Questions and Answers
What is the reason for different colors of light being refracted differently through a prism?
What is the reason for different colors of light being refracted differently through a prism?
- The angle of incidence of the light on the prism varies with the color of light.
- The refractive index of the prism varies with the wavelength or color of the light. (correct)
- The different colors of light have different speeds in the prism.
- The prism is made of a material that absorbs certain colors of light.
What is the relationship between the refractive index and the angle of refraction?
What is the relationship between the refractive index and the angle of refraction?
- The refractive index is inversely proportional to the angle of refraction.
- The refractive index is independent of the angle of refraction.
- The greater the refractive index, the greater the angle of refraction. (correct)
- The greater the refractive index, the smaller the angle of refraction.
Which color of light has the smallest refractive index and which color has the largest refractive index?
Which color of light has the smallest refractive index and which color has the largest refractive index?
- Violet has the smallest and red has the largest.
- Green has the smallest and orange has the largest.
- Yellow has the smallest and blue has the largest.
- Red has the smallest and violet has the largest. (correct)
What happens to the wavelength of light as it travels from red to violet?
What happens to the wavelength of light as it travels from red to violet?
What is the relationship between the frequency of light and its energy?
What is the relationship between the frequency of light and its energy?
Why do different colors of light appear at different positions in the spectrum?
Why do different colors of light appear at different positions in the spectrum?
Which color of light has the most energy?
Which color of light has the most energy?
What is the relationship between the products of the frequencies and wavelengths of the colors of light?
What is the relationship between the products of the frequencies and wavelengths of the colors of light?
Why does blue light appear at the bottom of the spectrum?
Why does blue light appear at the bottom of the spectrum?
What determines the amount of bending of light as it passes through a prism?
What determines the amount of bending of light as it passes through a prism?
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Study Notes
Sound Waves
- Sound waves bounce off when they strike a fixed end or a wall.
- An increase in frequency of a sound wave is manifested as a change in pitch.
- An increase in amplitude of a sound wave results in a louder sound.
- Faster waves are observed with an increase in frequency.
Refraction of Sound
- Refraction of sound occurs when it travels through hot and cold air.
Colors of Light
- The module focuses on the demonstration of understanding of the properties and characteristics of light, specifically refraction and dispersion.
- The activities in this module help students understand how light disperses to form the colors of light.
- The hierarchy of colors of light can be explained in terms of frequency, wavelength, and energy.
Refraction and Dispersion of Light
- Refraction is the bending of light as it passes from one medium to another.
- Dispersion is a special kind of refraction that results in different colors of light being refracted at different angles.
- The refractive index of a prism varies with the wavelength or color of light used.
- Different colors of light have different refractive indices, which causes them to bend at different angles.
- Red light is bent the least, while violet light is bent the most.
- The hierarchy of colors of light can be explained in terms of frequency, wavelength, and energy.
Characteristics of Colors of Light
- The frequency of light increases from red to violet.
- The wavelength of light decreases from red to violet.
- The energy of light increases as the frequency increases.
- Violet light has the most energy, while red light has the least energy.
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