If the Young's apparatus is immersed in water, the effect on fringe width will ________

Open in App

Solution

Explanation
Young’s Double Slit Experiment
This makes use of two coherent sources of light which are placed at a small distance, only a few orders of magnitude greater than the wavelength of light is used. It helped us to understand the wave theory of light.
Lasers are used as coherent sources in this experiment.
Every source can be a source of coherence for a light wave.
At any point on the screen at a distance ‘y’ from the center, the waves travel distances l₁ and l₂ to create a path difference of Δl at the point in question.
The point approximately subtends an angle of θ at the sources.
The wavelength of light is less in water than in air. Hence, the fringe width will decrease. The interference pattern will be observed, but the fringes will be narrower.
Thus, If Young’s apparatus has been immersed with water, then the effect for fringe width will be narrower.

Suggest Corrections

Similar questions

In a double-slit experiment the angular width of a fringe is found to be 0.2° on a screen placed 1 m away. The wavelength of light used is 600 nm. What will be the angular width of the fringe if the entire experimental apparatus is immersed in water? Take refractive index of water to be 4/3.

If the Young's apparatus is immersed in water, the effect on fringe width will

Q. What is the effect on the fringe width if
the whole apparatus (YDSE) is completely immersed in a liquid of refractive index
μ?

Q. In a Young's double slit experiment,the fringe width is found to be

0.4 m m

. What will be the new fringe width, if the whole apparatus is immersed in a water of refractive index 4/3 without disturbing the geometrical arrangement?

Q. In a Young's double slit experiment, the fringe width is found to be

0.4 m m .

If the whole apparatus is immersed in water of refractive index

\frac{4}{3}

without disturbing the geometrical arrangement, the new fringe width will be

Join BYJU'S Learning Program