In a Young's double slit experiment, the distance between slit is halfed and distance of screen is made three times. How will the frige width change?

In a Young's double slit experiment distance between the slits is 1 mm. The fringe width is found to be 0.6 mm. When the screen is moved through a distance of 0.25 m away from the plane of the slit, the fringe width becomes 0.75 mm. Find the wavelength of light used.

In Young's double slit experiment, three light blue, yellow and red are used successively. For which colour , will the fringe widh maximum.

In Young's double slit experiment, the slits are seperated by 0.24 mm. The screen is 1.2m away from the slits. The fringe width is 0.3 cm. Calculate the wavelength of the light used.

In a young's double slit experiment two slits are made one millimeter apart and the screen is placed one meter away. What is the fringe separation when monochromatic light of wavelenght 500nm is used?