Diffraction of Light

Light, from a monochromatic source, is made to fall on a single slit of variable width. An experimentalist records the following data for the linear width of the principal maxima on a screen kept at a distance of 1 m from the plane of the slit.
 

Using the observations from this data estimate the value of the wavelength of light used.

In a single slit diffraction experiment, a slit of width ‘d’ is illuminated by red light of wavelength 650 nm. For what value of ‘d’ will

​(i) the first minimum fall at an angle of diffraction of  $30°$ , and

(ii) the first maximum fall at an angle of diffraction of  $30°$ :

In a single slit diffraction experiment, a slit of width $d$ is illuminated by red light of wavelength $650 \mathrm{nm}$. For what value of $d$ will 

​(i) the first minimum fall at an angle of diffraction of  $30°$ and

(ii) the first maximum fall at an angle of diffraction of  $30°$

A parallel beam of light of wavelength $600\mathrm{\hspace{0.17em}}\mathrm{nm}$ is incident normally on a slit of width $a$. If the distance between the slit and the screen is $0.8\mathrm{\hspace{0.17em}}\mathrm{m}$ and the distance of 2^nd order minimum from the centre of the screen is $1.5\hspace{0.17em}\mathrm{mm}$, calculate the width of the slit.

Yellow light is used in a single slit diffraction experiment with slit width of 0.6 mm. If yellow light is replaced by X-rays, then the observed pattern will reveal,

Yellow light is used in a single slit diffraction experiment with slit width of $0.6 \mathrm{mm}$. If yellow light is replaced by X-rays, then the observed pattern will reveal,

Consider Fraunhoffer diffraction pattern obtained with a single slit illuminated at normal incidence. At the angular position of the first diffraction minimum, the phase difference (in radians) between the wavelets from the opposite edges of the slit is

Consider Fraunhoffer diffraction pattern obtained with a single slit illuminated at normal incidence. At the angular position of the first diffraction minimum, the phase difference (in radians) between the wavelets from the opposite edges of the slit is

A beam of light of wavelength $600 \mathrm{nm}$ from a distance source falls on a single slit $1 \mathrm{mm}$ wide and a resulting diffraction pattern is observed on a screen $2 \mathrm{m}$ away. The distance between the first dark fringes on either side of central bright fringe is

A slit of width $d$ is placed in front of a lens of focal length $0.5 \mathrm{m}$ and is illuminated normally with light of wavelength $5.89\times {10}^{-7} \mathrm{m}$. The first diffraction minima on either side of the central diffraction maximum are separated by $2\times {10}^{-3} \mathrm{m}$. The width $d$ of the slit is_________$m.$

In a single slit diffraction experiment $\lambda =600 \mathrm{nm}$, if at $\theta =30°$ first minima is formed then find the width of slit $\left(a\right)$ in $\mu \mathrm{m}$.

Estimate the number of dark fringes on the either side of the central maximum that can be produced by diffraction set up with slit of width $5\times {10}^{-6} \mathrm{m}$ and incident light of wavelength $600 \mathrm{nm}$.

 In Young's double slit experiment, a mica slit of thickness $t$ and refractive index $\mathit{\mu }$ is introduced in the ray from the$\mu$ first source S. By how much distance the fringes pattern will be displaced
 

When a Compact Disc $\left(CD\right)$ is illuminated by small source of white light coloured bands observed. This due to

How can light travels in a straight line path ?

How energy is consereved in double slit interference and single slit diffraction?

Draw and compare the intensity graph of single slit diffraction and double slit interference.

Suppose you are doing a diffraction experiment using a white light source on a piece of grating in which the number of grooves is $10,000$ lines per centimeter. After shining this light on the grating a first order diffraction of the shortest and longest wavelengths of light ($380\mathrm{nm}$ and $760\mathrm{nm}$) is visible on a screen $2\mathrm{m}$ away from the grating. The distance between the ends of the rainbow produced on the screen is

Compare the intensity of fringes in interference and diffraction.

How interference is different from diffraction in terms of formation of fringes?