1. Answer the following questions: a) What is a diffraction? b) Describe a diffr

Question

1. Answer the following questions:

a) What is a diffraction?

b) Describe a diffraction grating.

c) What is the difference between a transmission grating and a reflection grating? Which one you used in the lab?

d) What is a wavelength?

e) What is the wavelengths range for a visible light?

f) What is approximate wavelengths range for a red light?

g) Explain the meaning of each term in the diffraction grating equation (dsino=ml). What this equation allows to locate (minima, maxima, something else).

- If the distance d between two consecutive rulings of a diffraction grating will increase twice, how this will affect:

(3p) The wavelength of light;

(3p) Number of dots you’d observe on a screen in the experiment;

(3p) Distance between consecutive dots.

If the wavelength of light will increase twice (a different laser can be used), how this will affect:

(3p) The distance d between two consecutive rulings of a diffraction grading;

(3p) Number of dots you’d observe on a screen in the experiment;

(3p) Distance between consecutive dots.

Explanation / Answer

I will answer 4 parts as per chegg guidelines:

a) Diffraction is the bending of light as it passes around the edge of an object. However, the bending of light depends upon the wavelength and size of opening through which the light is passing.

b) Diffreaction grating is nothing but a tool havibg periodic structure which is used to seperate different wavelength of light and diffract them.

d) Wavelength = The distance between two successive crests of a wave.

e) wavelength range of visible light: 400-700 nm

f) red light: 650 nm

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