Two slits in young's double slit experiment are illuminated by two different sodium lamps emitting light of same wavelength . Do you observe any interference pattern on the screen?

Open in App

Solution

Sodium lamp is quasi mono chromatic.
Therefore, the spacial coherence of one lamp is not same as the other. Interference is never observed when the two slits are illuminated by two different sources of same wavelength because waves emitted from two different sources are not coherent in space and time

Thus only one source is used to demonstrate interference.

Suggest Corrections

Similar questions

Q. The two slits in a Young's double slit experiment are illuminated by two different sodium lamps emitting light of the same wavelength. No interference pattern will be observed on the screen.

Q. The two slits in Young's double-slit experiment are illuminated by two different sodium lamps emitting light of the same wavelength. No interference pattern will be observed on the screen. Mark 0 for False and 1 for True.

In a young's double slit experiment, two narrow vertical slits placed 0.800 mm apart are illuminated by the same source of yelow light of wavelength 589 nm. How far are the adjacent bright bands in the interference pattern observed on a screen 2.00 m away?

Q. What happens to the interference pattern if the two slits in Young's experiment are illuminated by two independent sources such as two sodium lamps

S

and

S^{'}

as shown in figure.

In Young's double slit experiment, if the two slits are illuminated with separate sources, no interference pattern is observed because

Join BYJU'S Learning Program