Q163 / 180 · COMEDK 2013 · Physics

In Young's double slit experiment, if monochromatic light used is replaced by white light, then

A
no fringes are observed
Correct answer
B
only central fringe is white, all other fringes are coloured
C
all bright fringes become white
D
all bright fringes have colours between violet and red

Solution

When the monochromatic light in Young's double slit experiment is replaced by white light, a white central bright fringe is observed as all wavelengths of light have zero phase difference at centre while at all other points, it is different for different colours. So different colour fringes are observed on both sides.

Hence, the correct answer is option: 'B'.

Relevant Questions

In a Young's double slit experiment, the slit separation is 1.5 mm. The setup is illuminated simultaneously by light of wavelengths 6000 Å a09 May, 2026 (S1)Youngs Double Slit Experiment
If the intensity of the central maximum in the Young's double slit experiment is , what will be the intensity at the same region when one of09 May, 2026 (S2)Youngs Double Slit Experiment
In a YDSE, the distance between the two slits is 2 mm and the wavelength of incident light is 578.9 nm . Path difference between the waves f25 May, 2025 (Shift)Youngs Double Slit Experiment
In a Young's double slit experiment, the two interfering waves forming the interference pattern have the same amplitude. The phase differenc25 May, 2025 (Shift)Youngs Double Slit Experiment
If is the amplitude of the electric field of the waves starting from the slits in a double slit experiment and is the phase difference betwe10 May, 2025 (S1)Youngs Double Slit Experiment
In the Young's double slit experiment, when a monochromatic light is used, fringe width obtained is 1 mm . If the wave length is halved and 10 May, 2025 (S2)Youngs Double Slit Experiment