Answer:
123.18 nm
Explanation:
Given:
- Refractive index of the glass=1.5
- Index of magnesium fluoride=1.38
- Wavelength of the light =680 nm
Let t be the thickness of the film. The relation between the wavelength of light in film and thickness of the film in order to have no reflection is given by
Now According to question we have
where n is the refractive index of the film.
Now thickness t is given by
Hence the thickness of the film is calculated in order to have no reflection.
Answer:
A force is any interaction that, when unopposed, will change the motion of an object
Explanation:
A. its only a physical change. It is not a chemical change as no H2O bonds are broken. When water molecules absorb enough energy they are able to change states i.e solid --> liquid , liquid --> vapour.
Hope this is clear
Gold<span> is both malleable and ductile.</span>
Answer:
No,
Explanation:
An electromagnetic wave is made of vibrating electric and magnetic fields that continually induce each other; matter is not needed for this to occur.