When light reaches a barrier or the edge of an opening it diffracts, which means that the light a) bends. b) bounces back. c) continues in the same direction. d) is unable to continue traveling.

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