Answer:
3 order dark fringe
Explanation:
y = Distance from central bright fringe = 204 mm
λ = Wavelength = 400 nm
L = Distance between screen and source = 1 m
d = Slit distance = 6 μm


Order of fringe is 3
So, it is a Dark order fringe
(B)Option b is your answer..........
Kinetic energy is energy that is in motion, thats all I remember
The awnser would be True. Hope I helped!
Yes it is valid all the times under the consideration of acceleration due to gravity .it is not valid on space where there is no influence of gravity