Question bank/JEE Main/Physics

In YDSE arrangement, white light is used to illuminate the slits.
At point on the screen directly in front of slits, which of these
wavelengths is missing?
([IMAGE] = wavelength of light used)
(d = distance between slits)
(D = distance between slits and screen)
(Given d<<D)

A$\frac{d^{2}}{6D}$B$\frac{d^{2}}{4D}$

Show answer and solution▾

Wavelength missing is condition for destructive superposition

Source: Grass-G / P-14 Physics paper 7 Nov.docx