Question

Why do different components of white light deviate through different angle when passing through a triangular glass prism

Answer 1

angle of deviation depends upon = n ... which is refractive index .. and n depends upon wavelength which is inversly proportional to n .. in white light there are 7 colours with diff wavelengths .. the colour with shortest wavelenghth would have more deviation and longest would have less deviation.. so they deviate in diff angle as they move from denser medium to rearer