what is formed at X?

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The figure shows a double slit experiment with P and Q as the slits. The path lengths PX and QX are nλ and (n+2)λ respectively, where n is a whole number and λ is the wavelength. Taking the central fringe as zero, what is formed at X?
12
Sep
The figure shows a double slit experiment with P and Q as the slits. The path lengths PX and QX are nλ and (n+2)λ respectively, where n is a whole number and λ is the wavelength. Taking the central fringe as zero, what is formed at X? The figure shows a double slit experiment with [...]
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Tags: The figure shows a double slit experiment with P and Q as the slits. The path lengths PX and QX are nλ and (n+2)λ respectively , what is formed at X? , where n is a whole number and λ is the wavelength. Taking the central fringe as zero ,