Diffraction grating practical lab: Practice Quiz 

In this experiment you determine the laser wavelength by diffraction grating. To provide all physical concept associated with this experiment I have created this quiz. You can attempt it and learn more about the experiment.

If you use this practice test please share your experience through the comment box below. So I can prepare for other experiments too if it is beneficial for you all.

Video: Just click the link and watch the video

In the above video, you can watch the demonstration of the experiment includes the diffraction grating practical lab. The grating is a glass slab that may have a number of lines known as grating elements. You may have noticed the text on the glass slab, i.e., 15000 LPI. It means 15000 thousand lines per inch.

How to perform laser wavelength by diffraction grating in practical lab

You know that in one inch is equal to 2.54 cm. So if you have to determine the grating element then you have to solve it mathematically. You can perform a diffraction grating practical lab with any laser.

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You will learn that what are the applications of diffraction grating and about to the plane diffraction grating. I have used here n lembda = 2d sin theta but in general we don’t use 2 in the diffraction grating formula. In this diffraction grating experiment you will observe a pattern of diffracted light. If you are using then it will be in seven colors. For monochromatic it will be only dark and bright. You can read more from diffraction grating pdf.

Diffraction grating definition:

Grating is a fine glass slab on which you can observe the number of slits, each slit is known as grating element and its width known as grating element.

In the quiz that is given below there are many diffraction grating experiment viva questions that will help you to understand this phenomenon and applications. what is grating element ? if this is your question. It has been clear to you know.

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