In the experiment to measure the wavelength of a monochromatic light beam, the beam is directed at two slit Young apart

= 0,07 mm. Adjust the viewing screen position to the position two slits
a segment D = 1.5 m then the background interference on the screen.
a) The measured 5th order dark fringe position is y = 4.5 cm. Calculate the wavelength  of the light beam.
b) Calculate the distance from the 3rd order bright fringe to the 5th order dark fringe.
c) Calculate the number of bright fringes observed on the screen.

An charge with mass m and charge q is emitted from the origin, (x,y)=(0,0). a large, flat screen is located at x=l. there is a target on the screen at y position y(h), where y(h) > 0. in this problem, you will examine two different ways that the charge might hit the target. ignore gravity in this problem. 1.assume that the charge is emitted with velocity v(0) in the positive x direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive y direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l. 2.now assume that the charge is emitted with velocity v(0) in the positive y direction. between the origin and the screen, the charge travels through a constant electric field pointing in the positive x direction. what should the magnitude e of the electric field be if the charge is to hit the target on the screen? express your answer in terms of m, q, y(h), v(0), and l.