In a Young’s double-slit experiment, the slit-to-screen distance D=1.0m is known to within ±0.5%, the slit separation d=0.50mm within ±1.0%, and the wavelength λ=600nm within ±0.2%. Estimate the percentage uncertainty in the calculated value of the fringe width β.
(a) 1.2%
(b) 0.7%
(c) 1.7%
(d) 1.5%