Answer:
The thickness of the film, t = 470.59 nm
Explanation:

For constructive interference, the net phase change, 
Then the thickness, 
m₁ = 1,2,3........
..............(i)
For destructive interference, the net phase change is 
m₂ = 1,2,3........
thickness,
..............(ii)
Equating (i) and (ii)


.............(iii)
From (iii), When m₁ =2, m₂ = 2
The thickness ,
then becomes

t = 470.59 nm
When an electron goes to lower orbital from higher orbital.
Answer:
This question is unclear but the answer is:
the color of the con
Explanation:
In an experiment, the independent variable is the variable that is changed or manipulated by the experimenter to achieve a measurable response.
In this experiment which involves a student that notices that wearing care colors insight makes him feel warmer se. He decides to conduct an experiment by manipulating the colors of the cares, hence, the color of the con is the independent variable.
Explanation:
The kinetic energy is due to the motion of the object.
The potential energy is due to the position of the object.
When a basketball is thrown upward then the kinetic energy decreases and the potential energy will be maximum when it will reach its maximum height.
When it starts falling then potential energy starts decreases due to the decrease in the height and the kinetic energy starts increases.