In a single slt diffraction experiment,the thrid minimum due to red light of wavelength 720 nm coinciedes with the fourth maximum due to ligth of some unkown wavelength.Find the value of the unkown wavelength.

In a simple slit diffraction experiment,first minimum of rd light(660 nm) coincides with first maximum of some other wavelength lambda' . Find the value of lambda' .

In a single slt diffraction pattern,how is the width of cetral bright maximum changed,when light of smaller wavelength is used.Justify you answer.

In the diffraction of a single slit experiment, how would the width of and the intensity of central maximum change,if visible light of longer wavelength is used?

Consider a metal exposed to light of wavelength 600 nm. The maximum energy of the electron doubled when light of wavelength 400 nm is used. Find the work function in eV.

In a double slit experiment the distance between the slits is 3 mm and the slits are 2 m away from the screen. Two interference patterns can be seen on the screen one due to light with wavelength 480 nm, and the other due to light with wavelength 600 nm. what is the separation on the screen between the fifth order bright frings of the two interference patterns?

9 A parallel beam of light of wavelength 500 nm falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 m away. It is observed that the first minimum is at a distance of 2.5 mm from the centre of the screen. Find the width of the slit.

in a Youing's double slit experiment,bicromatic light of wavelengths 400 nm and 560 nm are used.The distance between the slits is 0.1 mm and the distance between the plane of the slits and screen is 1.0m. the minimum distance between two successive regions of complete darkness is

In Young's double slit experiment ,the central bright fringe produced by ligth of wavelength 5,600 overset@A shifts to the position of 5th brigth fringe,when thin transparent film of refractive index 1.28 is introduced in the path of light from one of two slits.Find the thickness of te film.

In Young's double slit experiment,usin light of wavelength 400 nm,interference fringes of width X are obtained .The wavelength of light is increassed to 600 nm and the separation between the slits is halved.If one wants the observed fringe width on the screen to be the same in the two caes,find the rati of the distance between the screen and the plane of the interfering sources in the two arrangements.

A parallel beam of light of wavelength 500 nm (Nanometer) falls on a narrow slit and the resulting diffraction pattern is observed on a screen 1 metre away. It is observed that the first minimum is at a distance of 2.5 mm (milimetre) from the centre of the screen. Find the width of the slit.