What is the colour that comes to the base of the prism if composite yellow light is passed through it ?
Ared
Bgreen
Cblue
Dviolet
Answer:
B. green
Read Explanation:
Composite Yellow Light: In the context of light (additive color mixing), yellow is generally composed of a mixture of Red and Green wavelengths.
Dispersion by a Prism: A prism separates light because the refractive index of glass is different for different wavelengths (colors). Shorter wavelengths bend more (deviate more) than longer wavelengths.
Wavelength Comparison:
Green light has a shorter wavelength than Red light.
Bending: Because shorter wavelengths bend more, the green component of the yellow light will undergo the greatest deviation, meaning it will be refracted at a sharper angle and land closer to the base of the prism. The red component will bend less.
