A single slit located effectively at infinity in front of a lens of focal length `1 m`, and it is illuminated normally with light of wavelength `600 nm`. The first minimum on either side of central maximum are separated by `4 mm`. Width of the slit is

A slit is located 'at infinity' in front of a lens of focal length 1 m and is illuminated normally with light of wavelength 6000Å . The first minima on either side of the central maximum of the diffraction pattern observed in the focal plane of the lens are separated by 4 mm. What is the width of the slit? [0.3 mm]

A slit of width d is placed in front of a l ens of focal length 0.5m and is illuminated normally with light of wavelength 5.89xx10^(-7)m . The first diffraction minima on either side of the central diffraction maximum are separated by 2xx10^(-3)m . The width d of the slit is "_________" m.

A slit of width d is placed in front of a l ens of focal length 0.5m and is illuminated normally with light of wavelength 5.89xx10^(-7)m . The first diffraction minima on either side of the central diffraction maximum are separated by 2xx10^(-3)m . The width d of the slit is "_________" m.

A screen is at a distance of 2m from a narrow slit illuminated with light of 600nm. The first minimum lies 5mm on either side of the central maximum. The width of slit is