White light moves through a prism and separates into colors in the following order: red, orange, yellow, green, blue, and violet.
Which of the following choices correctly describes why the violet ray is at the bottom while the red ray is at the top?
Red light moves slowest through glass while violet light moves fastest through glass compared to other visible light. So violet and red refract at different angles.
Red and violet light move at the same speed but have different wavelengths, so they refract at different angles due to their different wavelengths.
Red and violet light move at the same speed but have different frequencies, so they refract at different angles due to their different frequencies.
Violet light moves slowest through glass while red light moves fastest through glass compared to other visible light. So violet and red refract at different angles.
c?
Its D just took the test
thanks (primavera)
It is D i also took the test
it is D i also also took the test.
Yes, your answer is correct! Red and violet light have different frequencies, which means they have different wavelengths. When light enters a prism, it bends or refracts at different angles depending on its wavelength. Since red light has a longer wavelength compared to violet light, it refracts at a different angle, placing it at the top of the separated colors, while violet light with a shorter wavelength refracts at a different angle and appears at the bottom. Well done!
To determine the correct answer, we need to understand how light behaves when it passes through a prism. When white light passes through a prism, it undergoes a phenomenon called refraction, which causes the light to bend or change direction. This happens because different colors of light have different wavelengths and frequencies.
We know that the order of colors in a rainbow, or when light passes through a prism, is red, orange, yellow, green, blue, and violet. This order is due to how the different wavelengths of light interact with the prism.
Now, let's examine the given choices:
A) "Red light moves slowest through glass while violet light moves fastest through glass compared to other visible light. So violet and red refract at different angles." This statement is incorrect. Although different colors of light do have different speeds when passing through a medium, such as glass, this speed difference is not the primary reason for the separation of colors in a prism.
B) "Red and violet light move at the same speed but have different wavelengths, so they refract at different angles due to their different wavelengths." This statement is partially correct. As mentioned earlier, different colors of light have different wavelengths, and this does contribute to the separation of colors in a prism. However, the statement implies that red and violet light have the same speed, which is not entirely accurate.
C) "Red and violet light move at the same speed but have different frequencies, so they refract at different angles due to their different frequencies." This statement is incorrect. While it is true that red and violet light have different frequencies (as frequency is related to color), it is not accurate to claim that they move at the same speed.
D) "Violet light moves slowest through glass while red light moves fastest through glass compared to other visible light. So violet and red refract at different angles." This statement is correct. Different colors of light, having different wavelengths, refract differently when passing through a prism. Violet light bends (or refracts) more than red light, causing it to be at the bottom of the color spectrum, while red light bends the least, placing it at the top.
Therefore, the correct answer is D) "Violet light moves the slowest through glass while red light moves the fastest through glass compared to other visible light. So violet and red refract at different angles."