Answer: Yes, the double-slit interference pattern consistent with the wave theory of light.

Purpose: To measure on a two-point interference pattern & to determine the wavelength of laser light.

Materials: 1) Meter stick and Measuring tape

2) Support stand and Grade 12 Physics book

3) Multiple-slit plate

4) White screen

5) Helium-neon laser

Procedure: In the test book.

Data: on the line paper.

Analysis: Average wavelength  (6.43*10^-7m) + (6.27*10^-7m) + (6.43*10^-7m) + (6.28*10^-7m) = 6.33*10^-7m

Known value  6.33*10^-7m

Experimental error  (6.33*10^-7m) - (6.33*10^-7m) / (6.33*10^-7m) * 100 = 0%

Evaluation: b) What are the factors that contribute to the error in the measurement of the wavelength of laser light"

Ans.) The factors that contribute to the error in the measurement of the wavelength of laser light are the followings: the movement of the white screen prevented us to measure the correct distance...