Question

lab activity obtaining a relation between angle of incidence and angle of refraction

Answer 1

Answer:

General Physics Experiment 9

Reflection and Refraction

Objectives:

To test the laws of reflection and refraction.

To measure the indices of refraction for water and glass.

To find the position of the image produced by a plane mirror.

Equipment:

Plane Mirrors and Wooden Holders

Crown Glass Rectangular Plate

Plastic Semi-disk Container

Protractor, Ruler

Craftsman Laser Trac™ leveling tool

Desk Lamp

Graphical Analysis Software

Physical Principles:

Figure 1

When light crosses from one material to another, its straight line path will bend by an amount determined by the speed of light in both materials. This “bending” of light is called refraction. The interface between two materials also causes reflection of light. See Figure 1. The law of reflection states that the incident angle θi is equal to the reflected angle θr :

$$\theta_r = \theta_i$$ (1)

The law of refraction, referred to as Snell’s Law, states the following relationship between the incident angle θi and the refracted (transmitted) angle θt:

$$n_i sin\theta_i = n_t sin\theta_t$$ (2)

The parameter n represents the index of refraction, defined as the ratio of speed of light in a vacuum, c, to the speed of light in the material, v.

$$n = \frac{c}{v}$$ (3)

For example, the index of refraction for air is 1.00, for pure water 1.33 and for

Answer 2

Answer:

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