Light Refraction and Angles

This video tutorial guides students through a lab activity to determine the refractive index of a prism. It begins with an introduction and the aim of the experiment, followed by a list of required materials and setup instructions. The tutorial then details the process of drawing and measuring angles on the prism, aligning pins to trace the path of light, and calculating angles of deviation and emergence. Finally, students are instructed to graph their results and make observations about the relationship between the angle of incidence and the angle of deviation.

What is the main objective of the lab activity?

• To find the refractive index of the prism

• To measure the angle of reflection

• To calculate the wavelength of light

• To determine the speed of light

Which of the following is NOT listed as a required material for the experiment?

• Laser pointer

• Prism

• Wooden plank

• Protractor

What shape is obtained after drawing the border line along the edges of the prism and removing it?

• Rectangle

• Circle

• Triangle

• Square

What is the angle between the incident ray and the normal line called?

• Angle of reflection

• Angle of refraction

• Angle of incidence

• Angle of deviation

Where should the protractor origin be placed to measure the angle of incidence?

• At point N

• At point M

• At point Q

• At point P

What is the line that passes through points A, B, M, N, C, and D called?

• Path of light

• Normal line

• Emergent ray

• Incident ray

What is the angle between the normal line at point N and the emergent ray called?

• Angle of emergence

• Angle of deviation

• Angle of reflection

• Angle of incidence

What should be done after extending both incident and emergent rays until they meet?

• Measure the angle of refraction

• Measure the angle of deviation

• Measure the angle of reflection

• Measure the angle of incidence

What should be plotted on the x-axis of the graph?

• Angle of deviation

• Angle of reflection

• Angle of incidence

• Angle of emergence

What is the point called where the tangent to the curve at the lowest point of the graph cuts the y-axis?

• Angle of minimum deviation

• Angle of refraction

• Angle of maximum deviation

• Angle of reflection