In a light interference pattern, alternate dark and bright fringes are seen. why are the bright fringes formed? a) no interference b) too much interference c) destructive interference d) constructive interference

One number is said to be an "order of magnitude" larger than another number if choose one: a. it is 10 times larger. b. it is 5 times larger. c. it is 3 times larger. d. it is 100 times larger. e. it is 2 times larger.