The attribute of light that changes as light goes through a glass slab is/are

 

Light is an electromagnetic wave that can move through space.

Refraction of light occurs when a light beam moves from one medium to another and deviates from its original course. The refraction of light is the name for this phenomena.

The refractive index of a media is defined as the ratio of the speed of light in a vacuum to the speed of light in that medium. An absolute refractive index is another name for it.

The velocity of a light beam varies when it goes from one medium/glass to another due to the properties of the glass/medium.

When a light beam goes from one medium to another, the wavelength of the light varies owing to a change in the refractive index. As a result, option 2 is right.

When light passes across different materials, its energy does not change. Since we know that light's energy may be defined as hf, We must infer that frequency does not vary if h is Planck's constant and f is frequency.

As a result, the frequency of light remains constant as it passes through various media.

As a result, the frequency of each wave is independent of the medium through which it travels. The frequency is determined by the light source.

As a result, the light ray's frequency remains constant. As a result, choices 1 and 3 are incorrect.