If the monochromatic source is replaced by a source of white light, then there will be
colourful interference fringes
,consisting of seven colours.
What would happen if we used a white light source instead of monochromatic light in the double slit interference experiment explain why?
If white light is used in the double-slit experiment,
the different colours will be split up on the viewing screen according to their wavelengths
. The violet end of the spectrum (with the shortest wavelengths) is closer to the central fringe, with the other colours being further away in order.
What happens when white light is used instead of monochromatic light?
Answer White light consists of waves of innumerable wavelengths ranging from violet to red color. So if monochromatic light in Young’s double-slit experiment is replaced by white light, then
the waves of every wavelength form their separate interference patterns
.
What do you expect if the monochromatic light will be replaced by white light in the Newton’s ring experiment?
In an interference experiment monochromatic light is replaced by white light, we will see: Answer: …
Each light will have its dark and bright fringes independently, but each bright fringe light will coincide at y= 0, i.e. for a center
.
Can we use white light instead of monochromatic light to obtain interference?
These are called
interference fringes
. … Therefore, if monochromatic light in Young’s interference experiment is replaced by white light, then the waves of each wavelength form their separate interference patterns The resultant effect of all these patterns is obtained on the screen.
Can white light be monochromatic?
This means
the light contains only one wavelength
. … This makes monochromatic light useful in many experiments. Sunlight consists of many colours.
What will happen if white light is used in place of sodium light?
You can’t. The Michelson Morley experiment requires measuring the position of interference fringes. With
white light they would all overlap and you wouldn’t
be able to determine the location of individual fringes.
What did Young’s experiment prove?
Young’s original double-slit experiments were in fact the first to demonstrate
the phenomenon of interference
. When he shone light through two narrow slits and observed the pattern created on a distant screen, Young didn’t find two bright regions corresponding to the slits, but instead saw bright and dark fringes.
How dark and bright fringes are formed?
The dark and the bright fringes are formed
due to interference
. Thomas Young demonstrated the phenomenon of interference by a simple experiment called the double slit experiment. In the experiment, two slits were illuminated by a monochromatic source of light.
Why monochromatic light is used in interference?
When monochromatic light passing through two narrow slits illuminates a distant screen, a characteristic pattern of bright and dark fringes is observed. This interference pattern is caused by
the superposition of overlapping light waves originating from the two slits
.
Why the central spot in Newton’s ring is dark?
The centre of the ring dark in Newton’s Rings experiment with reflected light is dark
because at the point of contact the path difference is zero but one of the interfering ray is reflected so the effective path difference becomes λ/2
thus the condition of minimum intensity is created hence centre of ring pattern is …
What if white light is used in Newton’s ring experiment?
If white light is used in the Newton’s rings experiment,
the colour observed in the reflected light is complementary to that observed in the transmitted light is complementary to that observed in the transmitted light through the same point
.
What kind of fringes are produced when white light is used?
Thus if we use white light in place of monochromatic light the
central fringe
is white, containing on either side a few coloured fringes (in order VIBGYOR) and the remaining screen appears uniformly illuminated.
Can we produce interference with white light?
Note: As discussed earlier to produce constructive and destructive interference, we need two waves from the same source or with constant phase difference. In labs,
white light is not usually used to demonstrate interference
, normally we use sodium lamps as a single light source for the two waves.
Is white light coherent?
White light is a combination of all visible wavelengths (400 – 700 nm). …
Coherent means that the waves of light are in phase with
each other. A light bulb produces many wavelengths, making it incoherent.
Does white light contains single colour or more?
White light is
a combination of all colors in the color spectrum
. It has all the colors of the rainbow. Combining primary colors of light like red, blue, and green creates secondary colors: yellow, cyan, and magenta. All other colors can be broken down into different combinations of the three primary colors.
