Light of wavelength 400nm is incident on two slits separated by 1000mm. the interference pattern from the slits is observed from a satellite orbiting 0.4mm above the earth. the distance between interference maxima as detected at the satellite is

a. 0.16mm.
b. 0.16km.
c. 0.16m.
d. 0.16mm.

C) 0.16 m

Explanation:

Distance between two consecutive maximum is given as

here we know that

L = distance of the screen = 0.4 Mm

d = distance between two slits = 1000 mm

= 400 nm[/tex]

so we know that

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

read more on -