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 doubled:
A)if the distance between the slits is doubled.
B)if the wavelength is changed to
C)if the distance between the slits is quadruple the original distance and the wavelength is changed to
D)if any of the above occurs.
E)only if the width of the slits is changed to

Question

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 doubled:
A)if the distance between the slits is doubled. 
B)if the wavelength is changed to 
C)if the distance between the slits is quadruple the original distance and the wavelength is changed to 
D)if any of the above occurs. 
E)only if the width of the slits is changed to

Quizplus · Accepted Answer

The Answer of 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 doubled:
A)if the distance between the slits is doubled. 
B)if the wavelength is changed to 
C)if the distance between the slits is quadruple the original distance and the wavelength is changed to 
D)if any of the above occurs. 
E)only if the width of the slits is changed to

Bright and Dark Fringes Are Seen on a Screen When