Dispersion of light Glass prism me kyon hota hai Glass slab se kyon nhi?
In case of glass slab, The two interface surfaces are parallel to each other, when white light enter in to first interface. All of the bending (and dispersion) that takes place at the first interfaces is exactly reversed at the second, no effect of the first interface. So different colors emerge parallel to each other and are seen simultaneously. That’s why, dispersion doesn’t occur in a glass slab.