In Fresnel's biprism experiment, the source contains two wavelength 6000 Å and 5000 Å. The fourth order bright fringe of first wavelength is at a distance of 3 mm from the central band. The distance of the same order of bright band of second wavelength from the central band is

In the double-slit experiment, the distance of the second dark fringe from the central line are 3 mm . The distance of the fourth bright fringe from the central line is

In YDSE, light of wavelength 5000 Å is used. The third bright band on the screen is formed at a distance of 1 cm from the central bright band. If the screen is at a distance of 1.5 m from the centre of narrow slits, calculate the separation between the slits.

In Fresnel's biprism experiment, the 5th maximum for wavelength lamda_(1) is at a distance d_(1) from the central bright bannd. If the 5th maximum for wavelength lamda_(2) is at a distance d_(2) from the central bright band, then the ratio d_(1)/d_(2) is

In a Fresnel's biprism experiment, sodium light of wavelength 5832 Å is used. Calculated the fringe width, given the distance between the screen and the biprism =120 cm and the distance the two sources=0.04 cm.

In a biprism experiment, the distance of the 7th dark band from the central bright band is 2.6 mm. the width of the fringe is

In fresnel's biprismm experiment, the second dark band is at a distance of 1 mm from the central bright band. If D=1m and d=0.9 mm, then the wavelength of light used is

In a biprism experiment, the distance of the 20th bright band from the centre of the interference pattern is 8 mm. The distance of the 30th bright band from the centre is

Biprism experiment is conducted with a wavelength of 5000Å . The distance between the virtual sources is 0.2 mm and the micrometer eyepiece is at a distance of 100 cm from the slits. The distance between the consecutive bright and dark between the consecutive bright and dark band is