In Young's double - slit experiment, d = 0.1 mm, D = 20 cm, and `lambda=5460Å`, the angular position for first dart fringe will be

In Young's double - slit experiment, d = 0.1 mm, D = 20 cm, and lambda=5460Å , the angular position for first dark fringe will be

In Young's double - slit experiment, d = 0.1 mm, D = 20 cm, and lambda=5460Å , the angular position for first dark fringe will be

92 fringes are obtained in the definite distance R on screen by Young's double slit experiment using sodium light of (lambda = 5898Å) . If (lambda=5461Å) is used, how many fringes will be obtained in the same distance ?

In Young's double slit experiment with wavelength 5890 Å , there are 60 fringe in the field of vision, How many fringes will be observed in the same field of vision id wavelength used is 5460 Å ?

In Young's double slit experiment with wavelength 5890 Å , there are 60 fringe in the field of vision, How many fringes will be observed in the same field of vision id wavelength used is 5460 Å ?

In Young's double slit experiment slit separation is d, and distance of screen from slate is D (D>>d). If first dark fringe is formed in front of one of the slit, then web length of light used will be