A thin paper of thickness $$0\cdot 02 \mathrm { mm }$$ having a refractive index $$1 . 45$$ is pasted across one of the slits in a Young's double slit experiment. The paper transmits $$4/ 9$$ of the light energy falling on it. (a) Find the ratio of the maximum intensity to the minimum intensity in the fringe pattern. (b) How many fringes will cross through the centre if an identical paper piece is pasted on the other slit also? The wavelength of the light used is $$600 \mathrm { nm }$$
In a Young's double slit experiment $$15$$ fringes are observed on a small portion of the screen when light of wavelength $$500\ nm$$ is used. Ten fringes are observed on the same section of the screen when another light source of wavelength $$\lambda$$ is used. Then the value of $$\lambda$$ is (in $$nm$$).__________
Consider a young's doluble slit experiment as shown in figure. What should be the slit seperation d in term of wavelength $$\lambda$$ such that the first minima occurs directly in front of the slit $$(S_1)$$ ?
In Young's double slit experiment, the slits are 2 mm apart and are illuminated by photons of two wavelengths $$\lambda _{1}=12000\:A^{0}$$ and $$\lambda _{2}=10000\:A^{0}$$. At what minimum distance from the common central bright fringe on the screen 2 m from the slit will a bright fringe from one interference pattern coincide with a bright fringe from the other?
In a double slit experiment, the two slits are 1 mm apart and the screen is place 1 m away. A monochromatic light of wavelength 500 nm is used. What will be the width of each slit for obtaining ten maxima of double slit within the central maxima of single slit pattern?
A light source, which emits two wavelengths $$\lambda_1 = 400$$nm and $$\lambda_2 = 600$$nm, is used in a Young's double slit experiment. If recorded fringe widths for $$\lambda_1$$ and $$\lambda_2$$ are $$\beta_1$$ and $$\beta_2$$ and the number of fringes for them within a distance y on one side of the central maximum are m$$_1$$ and m$$_2$$, respectively, then
In a Young's double slit experiment the spacing between the slits is $$0.3\ mm$$ and the screen is kept at a distance of $$1.5\ m$$. The second bright fringe is found $$6\ mm$$ from the central fringe. The wavelength of the light used in the experiment is
If the intensities of the two interferring beams in Young's double-slit experiment are $$I_1$$ and $$I_2$$, then the contrast between the maximum and minimum intensities are good when
The distance of $$n^{th}$$ bright band on the screen from the central bright band on either sides of central bright band is __________.
In a Young's double slit experiment, $$\lambda =500 \ nm, \ d =10 \ mm \ \ and \ \ D= 1.0 \ m$$ . Find the minimum distance from the central maximum for which the intensity is half of the maximum intensity.
A source emitting light of wavelength $$480\ nm$$ and $$600\ nm$$ is used in a double slit interference experiment. The separation between the slits is $$0.25\ mm$$ and the interference is observed on a screen placed at $$150\ cm$$ from the slits. Find the linear separation between the first maximum (next to the central maximum) corresponding to the two wavelengths.