Aim: To determine the wavelength of Laser using one dimensional diffraction grating.
Apparatus used in the experiment: Laser, one dimensional diffraction grating, ruler, screen.
Apparatus to be used by you: 15cm or 30cm ruler.
d = grating element,
n = order of maxima,
θ = angle between central maxima and first order maxima ,
λ = wavelength of laser
Click below to download high resolution images (if needed):
In order to get your response, we are providing you with a google form. So that, we can get an idea about
The google form: https://docs.google.com/forms/d/1LkTVewvaICMcGZBV__vBta59x6j2IIC5sFdiNBCzZCM/edi
Use the spreadsheet for calculations if needed: spreadsheet
You may download the graph sheet to plot the graph: Graph Sheet
What is meant by 1% uncertainty in the measurement of data?
When we say that we want to measure a variable, y with 1% uncertainty, it means that
It means that the measured quantity is at least 100 times the least count.