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 narrow slit of width d is placed in front of a convex lens of focal length 0.5 m. the slit is illuminated normally by a light of wavelength 5.89 xx 10^(-7) m. If the distance between two first minima on the either side of central maximum is 2xx10^(-3) m, calculate the width d of the slit.

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 size 0.15m is placed at 2.1m from a screen. On illuminated it by a light of wavelength 5xx10^-5cm . The width of central maxima will be