Red light of wavelength 633 nm from a helium-neon laser passes through a slit 0.380 mm wide. the diffraction pattern is observed on a screen 3.55 m away. define the width of a bright fringe as the distance between the minima on either side.

width of maximum intensity at the center of screen is 12 mm

Explanation:

Position of minimum intensity on the screen is given as

now we know that for first position of minimum intensity on the screen we have

now we know

now we have

now total angular width of central maximum is given as

now linear width is given as

d) physical means can be used to separate the components of air.

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.