Multiple Choice
Bright and dark fringes are seen on a screen when light from a single source reaches two narrow slits a short distance apart.The number of fringes per unit length on the screen can be halved
A) if the distance between the slits is changed to .
B) if the wavelength is changed to .
C) if the distance between the slits is the wavelength is changed to
.
D) if any of the above occurs.
E) only if the width of the slits is changed to .
Correct Answer:

Verified
Correct Answer:
Verified
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