When light travels from less optically dense medium to more optically dense the angle of incidence is greater than the angle of refraction is it true?

Yes, that statement is true. When light travels from a less optically dense medium (like air) to a more optically dense medium (like water), the angle of incidence is greater than the angle of refraction. This phenomenon occurs due to the change in speed of light as it enters a denser medium, causing it to bend towards the normal line. This behavior is described by Snell's Law.