A double slit S1−S2 is illuminated by a coherent ight of wavelength

1.	A double slit S1−S2 is illuminated by a coherent ight of wavelength \lambda the slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance D1 from it and a screen ∑ is placed behind the double slit at a distance D2 from it (figure 17 - E2). The screen ∑ receives only the light reflected by the mirror. Find the fringe -width fo te interference pattern on the screen.
Answer» A double slit $S_{1} - S_{2}$ is illuminated by a coherent ight of wavelength \lambda the slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance $D_{1}$ from it and a screen $\sum$ is placed behind the double slit at a distance $D_{2}$ from it (figure 17 - E2). The screen $\sum$ receives only the light reflected by the mirror. Find the fringe -width fo te interference pattern on the screen.

A double slit S1−S2 is illuminated by a coherent ight of wavelength \lambda the slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance D1 from it and a screen ∑ is placed behind the double slit at a distance D2 from it (figure 17 - E2). The screen ∑ receives only the light reflected by the mirror. Find the fringe -width fo te interference pattern on the screen.

Answer»

A double slit $S_{1} - S_{2}$ is illuminated by a coherent ight of wavelength \lambda the slits are separated by a distance d. A plane mirror is placed in front of the double slit at a distance $D_{1}$ from it and a screen $\sum$ is placed behind the double slit at a distance $D_{2}$ from it (figure 17 - E2). The screen $\sum$ receives only the light reflected by the mirror. Find the fringe -width fo te interference pattern on the screen.

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