The width of central fringe of a diffraction pattern is 5.8 mm on a screen at a distance 2m. If light source has wavelength 5800 Å then the slit width

Angular width of central maxima in the Fraunhofer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength 6000Å . When the slit is illuminated by light of another wavelength, the angular width decreases by 30%. The wavelength of this light will be

Angular width of central maxima in the Fraunhofer diffraction pattern of a slit is measured. The slit is illuminated by light of wavelength 6000Å . When the slit is illuminated by light of another wavelength, the angular width decreases by 30%. The wavelength of this light will be

Light of wavelength lambda is incident on slit of width d. The resulting diffraction pattern is observed on a screen placed at distance D. The linear width of central maximum is equal to width of the slit then D = .......

Light of wavelength 6000A^(0) is incident on a single slit. The first minimum of the diffraction pattern is obtained at 4 mm from the centre. The screen is at a distance of 2m from the slit. The slit width will be

The first diffraction minima in a single slit diffraction pattern is at theta=30^(@) , for light of wavelength=5000 Å. The width of the slit is

A single slit of width a is illuminated by violet light of wavelength 400 nm and the width of the diffraction pattern is measured as y. When half of the slit width is covered and illuminated by yellow light of wavelength 600 nm, the width of the diffraction pattern is

A singled slit of width a is illuminated by violet light of wavelength 400 nm and the width of diffraction pattern is measured as y . When half of the slit width is covered and illuminated by yellow light of wavelength 600 nm, the width of the diffraction pattern is