A parallel beam of monochromatic light is incident on a narrow rectangular slit of width `1mm`.When the diffraction pattern is seen on a screen on a screen placed at a distance of`2m`.the width of principal maxima is found to be`2.5mm`.the wave length of light is

Light of wavelength lamda is incident on a slit of width d. the resulting diffraction pattern is observed on a screen at a distance D. the linear width of the principal maximum is, then equal to the width of the slit if D equals

A parallel beam of monochromatic light is incident normally on a slit. The diffraction parttern is observed on a screen placed at the focal plane of convex lens. If the slit width is increased , the central maximum of the diffraction pattern will

Light of wavelength lamda is incident on a slit width d. The resulting diffraction pattern is observed on a screen at a distance D. The linear width of the principal maximum is then equal to the width of the slit if D equals

Light of wavelength lamda is incident on a slit width d. The resulting diffraction pattern is observed on a screen at a distance D. The linear width of the principal maximum is then equal to the width of the slit if D equals

A parallel beam of monochromatic light falls normally on a single narrow slit. How does the angular width of the principal maxima in the resulting diffraction pattern depend on width of the slit?

Light of wavelength lambda is incident on a slit. First minima of the diffraction pattern is found to lie at a distance of 6 mm from the central maximum on a screen placed at a distance of 2 m from the slit. If slit width is 0.2 mm, then wavelength of the light used will be :