These are two questions that I need help with:
1.What statement about light traveling through water and glass is true?
A.Water and glass absorb different colors of light
B.Light changes colors as it passes from water to glass
C.Light travels at different speeds in water and glass
D.Light must be perpindicular to the surface to pass from water to glass
C?
2.[Ex:A white light passes through a prims and comes out as a rainbow]How does the prism produce colors of the rainbow from white light?
A.by absorbing colorless wavelengths from white light
B.by seperating the light of different wavelengths
C.by changing the wavelenghth of white light into other wavelengths
D.by reflecting light with other wavelengths and transmitting light with colored wavelengths.
No idea on this one! Need help!
Thanks
-MC
1C, 2B
The separation of while light colors by a prism is by refraction into different directions for each color.
Thanks so much drwls!
-MC
1. The correct answer is C. Light travels at different speeds in water and glass.
2. The correct answer is B. The prism separates the light of different wavelengths.
1. To answer the first question, we need to assess each statement:
A. Water and glass absorb different colors of light: This statement is generally true. Different materials have different absorption properties, meaning they can absorb certain colors of light and reflect or transmit others. However, the question is specifically asking about water and glass, so this statement is not relevant.
B. Light changes colors as it passes from water to glass: This statement is not true. Light does not change colors as it passes from one transparent medium to another. It may refract or bend due to the change in the speed of light, but its color remains the same.
C. Light travels at different speeds in water and glass: This statement is true. Light travels at different speeds in different mediums. In general, light travels slower in water than in glass.
D. Light must be perpendicular to the surface to pass from water to glass: This statement is not true. Light can pass from one medium to another at different angles, not necessarily perpendicular to the surface.
Given the analysis, the correct answer to the first question is indeed C. Light travels at different speeds in water and glass.
2. Now, let's move on to the second question:
A. By absorbing colorless wavelengths from white light: This option is not correct. If the prism were to absorb colorless wavelengths, it would not produce a rainbow of colors.
B. By separating the light of different wavelengths: This option is correct. When white light passes through a prism, it gets separated into its constituent colors due to the phenomenon called dispersion. The prism refracts different wavelengths of light at different angles, causing them to spread out and form a rainbow.
C. By changing the wavelength of white light into other wavelengths: This option is not accurate. The prism does not change the wavelength of white light, but rather separates it into its component wavelengths.
D. By reflecting light with other wavelengths and transmitting light with colored wavelengths: This option is not accurate. The prism does not primarily reflect or transmit light but rather refracts it.
Hence, the correct answer to the second question is B. The prism produces colors of the rainbow from white light by separating the light of different wavelengths.