Question

In Young's double slit experiment if two slightly different wavelengths are present in the light used, then ______.

Options

• the sharpness of fringes will increase everywhere (compared to the case when monochromatic light is used).

• there will be no fringes at all.

• the sharpness of fringes will decrease as we move away from central fringe. 

• the central fringe will be white.

Answer 1

In Young's double slit experiment if two slightly different wavelengths are present in the light used, then the sharpness of fringes will decrease as we move away from central fringe.