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In a double-slit interference experiment, interference fringes are observed on a distant screen. The width of both slits is then doubled without changing the distance between their centers.
a. What happens to the spacing of the fringes? Explain.
b. What happens to the intensity of the bright fringes? Explain.

Respuesta :

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Answer:

(a) The spacing of the fringes will remain unchanged if there is a change in the width of the slits but no change in the centers' distance.

(b)  However, if the slits are made to be broader, wave interference will create less contrast.  There will be a reduction in the intensity of the bright fringes.

Explanation:

The equation for the double slit experiment is shown below:

mλ = dsinθ

Thus: (a) The spacing of the fringes will remain unchanged if there is a change in the width of the slits but no change in the centers' distance.

(b)  However, if the slits are made to be broader, wave interference will create less contrast.  There will be a reduction in the intensity of the bright fringes.

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