Two narrow slits separated by 0.30 mm are illuminated with light of wavelength 496 nm. (a) how far are the first three bright fringes from the center of the pattern if observed on the screen 130 cm distant? (b) how far are the first three dark fringes from the center of the pattern?

Explanation:

a)

d = separation of the slits = 0.30 mm = 0.30 x 10⁻³ m

λ = wavelength of the light = 496 nm = 496 x 10⁻⁹ m

n = order of the bright fringe

D = screen distance = 130 cm = 1.30 m

= Position of nth bright fringe

Position of nth bright fringe is given as

For n = 1

For n = 2

For n = 3

b)

Position of nth dark fringe is given as

For n = 1

For n = 2

For n = 3

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.