Investigating Refractive Index with Light and Glass Block

The video tutorial explains the concept of refraction, focusing on the angles of incidence and refraction as light passes through a glass block. It details an experiment setup to measure these angles and calculate the refractive index. The process involves tracing the light path, measuring angles with a protractor, calculating sine values, and plotting graphs to analyze the data. The tutorial concludes with determining the refractive index using the line of best fit on a graph of sine values.

What is the line called that is perpendicular to the boundary between two materials?

• Boundary line

• Incident line

• Normal line

• Refracted line

In the experiment, what is the first step to measure the refractive index of a glass block?

• Trace an outline around the glass block

• Place a protractor on the glass block

• Calculate the sine of angles

• Measure the angle of refraction

How do you determine the angle of incidence in the experiment?

• By measuring the angle between the refracted ray and the normal

• By measuring the angle between the incident ray and the normal

• By measuring the angle between the boundary and the normal

• By measuring the angle between the glass block and the normal

What is the angle of refraction if the angle of incidence is 44 degrees?

• 60 degrees

• 30 degrees

• 44 degrees

• 90 degrees

What is the purpose of plotting sine of I against sine of R?

• To measure the thickness of the glass block

• To find the speed of light in the material

• To determine the refractive index of the material

• To calculate the angle of incidence

What is the refractive index if sine of the angle of incidence is 0.6 and sine of the angle of refraction is 0.46?

• 0.46

• 1.304

• 0.76

• 1.5

What is the relationship between the angle of incidence and the angle of refraction?

• They are always equal

• They are inversely proportional

• They are directly proportional

• They are unrelated