light with a wavelength of 500 nm is used to illuminate a slit of 5nm. At which angle is the 5th minimum in the diffraction pattern seen?​

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples