Question

A ray of light is incident on a glass slab normally. Calculate the percent change in the angle of refracted ray with respect to the normal. The refractive index of Glass is 1.5.​

Answer 1

Snell’s law: It also known as the law of refraction is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light or other waves passing through a boundary between two different isotropic media, such as water, glass, or air.

Snell's law states that the ratio of the sines of the angles of incidence and refraction is equivalent to the ratio of phase velocities in the two media, or equivalent to the reciprocal of the ratio of the indices of refraction.

sin ¢ 1 / sin¢2 = n2/n1

n1, n2 are refractive indices of different media.

θ1, θ2 are angles where the light ray enters into the media.

Calculation:

Given the refractive index of glass = 1.5 and angle incident = π/4

One medium is assumed to be air and another is glass.

According to Snell’s law:

See the attachment for solution

Thanks

Answer 2

Answer:

The percentage change is 0

Explanation:

Since all angles are measured from the normal, the angle of incidence of a light ray incident ordinarily will be zero.

The angle of refraction will be zero if a light beam is incident properly on a glass slab because, according to the formula, i=r.

The refractive index, also known as the refraction index, of an optical media is a dimensionless quantity that indicates how well that medium bends light.

Angles of incidence and refraction are shown in this example.

Ray of light refraction

The refractive index controls how much light is refracted or twisted when it enters a substance. The angle of incidence and angle of refraction of a ray as it crosses the interface between two media with refractive indices of n1 and n2 are, respectively, n1 sin 1 and n2 sin 2, which describe this. The critical angle for total internal reflection and the amount of light that is reflected when it reaches the interface are both determined by refractive indices.

See more:

https://brainly.in/question/11281222

#SPJ5