In a single slit diffraction of light of wavelength `lambda` by a slit of width e, the size of the central maximum on a screen at a distance b is

In single slit diffraction of light of wavelength lambda , angular width of the central maximum (considering slit width d) will be

In the diffraction of light of wavelength lambda at a single slit of width a, the angle theta between the central maximum and first minimum on either side is

If we observe the single slit Fraunhofer diffraction with wavelength lambda and slit width d, the width of the central maxima is 2theta . On decreasing the slit width for the same lambda

In a single slit diffraction with lambda = 500 nm and a lens of diameter 0.1 mm then width of central maxima, obtain on screen at a distance of l m will be ......

(a) Derive the relation a sin theta=lambda for the first minimum of the diffraction pattern produced due to a single slit of width ‘a’ using light of wavelength lambda . (b) State with reason, how the linear width of central maximum will be affected if (i) monochromatic yellow light is replaced with red light, and (ii) distance between the slit and the screen is increased. (c) Using the monochromatic light of same wavelength in the experimental set-up of the diffraction pattern as well as in the interference pattern where the slit separation is 1 mm, 10 interference fringes are found to be within the central maximum of the diffraction pattern. Determine the width of the single slit, if the screen is kept at the same distance from the slit in the two cases.

In the experiment of diffraction at a single slit, if the slit width is decreased, the width of the central maximum