Consider the double slit experiment for light. Complete each statement as it wou

Question

Consider the double slit experiment for light. Complete each statement as it would apply to Young's experiment (for each statement select "Increases", "Decreases", or "Cannot be Predicted").

1. If a variable is not mentioned, consider it to remain unchanged.
2. If slit separation decreases, fringe separation ...?...   
3. If the distance to the screen decreases, fringe separation ...?...
4. If the wavelength of the light used decreases, fringe separation ...?...
5. If the distance to the screen doubles and slit separation triples, fringe separation ..?...
6. If slit separation decreases and the distance to the screen decreases, fringe separation ...?...
7. For the fringe separation to remain unchanged, wavelength ..?.. while the distance to the screen decreases.
8. If the frequency of the light used decreases, fringe separation ...?...

Explanation / Answer

Fringe Width = D*(lambda) / d

where D = Distance between slits and screen

(lambda) = wavelength

d = slit separation

also frequency = speed/wavelength

SOLUTIONS

2) INCREASES

3) DECREASES

4) DECREASES

5) DECREASES

6) CANNOT BE PREDICTED

7) INCREASES

8) INCREASES

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