Could i please get some help with this, it would mean a lot. Thank you !!

Question 1 B C D E The figure provided displays the viewing screen in a double-slit experiment. Noting that fringe Cis the central maximum, what will happen to the fringe spacing if the wavelength of the light is decreased? O The fringe spacing will remain constant. The fringe spacing will decrease. The fringe spacing will increase. Question 2 B C D E The figure provided is the interference pattern seen on a viewing screen behind 2 slits. Which of the following is true if the 2 slits were replaced by 48 slits having the same spacing d between adjacent slits. The number of fringes on the screen increases. O The number of fringes on the screen decreases. O The number of fringes on the screen remains constant.Question 3 Where is an image located if a concave mirror of focal length fforms an image of the moon? O Almost exactly a distance fin front of the mirror. O At a distance behind the mirror equal to the distance of the moon in front of the mirror. O At the mirror's surface. O Almost exactly a distance fbehind the mirror. Question 4 The figure provided shows an object near a lens where the focal points are marked. Which of the following best describes the image produced? O Upright and real. O Inverted and real. O Upright and virtual. O Inverted and virtual.1. [Knight Problem 33.?) Light from a sodium lamp (A 2 '189 nm) illuminates two narrow slits. The fringe spacing on a screen 150 cm behind the slits is 4.0 mm. 1What is the spac ing (in mm) between the two slits? [Answerz 0.22 mm.] [Knight Problem 33.11) A dill'raction grating produces a rstorder maximum at an angle of 20.[l. What is the angle of the secondorder maximum? [Answer 43.2.] [Knight Problem 33.13) The two most prominent wave- lengths in the light emitted by a hydrogen discharge lamp are 656 mn (led) and 485 nm (blue). Light from a hydrogen lamp illuminate-s a diffraction grating with 500 linesfmm, and the light is observed on a screen 1.50 in behind the grating. 1What is the distance between the rstorder red and blue fringes? [Answer 14.5 em.] (Knight Problem 33.15) In a single-slit experiment, the slit width is 200 times the wavelength of the light. 'What is the width {in mm) of the central maximum on a screen 2:0 in behind the slit? [Answer: 20 mm.]