In the Young’s Double slit experiment, when we place a converging lens after the slits and place the screen at the focus of the lens, it

Question

In the Young’s Double slit experiment, when we place a converging lens after the slits and place the screen at the focus of the lens, it (A) introduces an extra path difference in the parallel beam. (B) introduces no path difference in the parallel beam. (C) introduces an extra phase difference in the parallel beam. (D) introduces an extra fringe in the diffraction pattern.

Tardigrade Admin · Accepted Answer

Introducing a converging lens in the path of parallel beam does not introduce any extra path differences in a parallel beam. Rather it gives a more intense pattern on the screen.

Q. In the Young’s Double slit experiment, when we place a converging lens after the slits and place the screen at the focus of the lens, it

introduces an extra path difference in the parallel beam.

introduces no path difference in the parallel beam.

introduces an extra phase difference in the parallel beam.

introduces an extra fringe in the diffraction pattern.

Introducing a converging lens in the path of parallel beam does not introduce any extra path differences in a parallel beam. Rather it gives a more intense pattern on the screen.