CUET Preparation Today
The figure shows a double slit experiment P and Q are 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
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First bright First dark Second bright Second dark |
Second bright |
For brightness, path difference nλ = 2λ So second is bright. |
