Answer:
Explanation:
the energy gap between the ground state and excited state in the laser material will be equal to energy of photons emitted
Wave length of photons = 520 nm
Energy = 1244 / 520 e V ( Formula for conversion of wavelength in nm to energy in eV )
= 2.4 e V
the energy gap between the ground state and excited state in the laser material = 2.4 e V
A commercial oven because it is more durable plus it’s more professional so they use more heat then we do at home
Answer:
Granite is an excellent building material that provides some outstanding interior design opportunities whilst being incredibly sturdy and reliable. It has become one of the most popular building materials in modern construction, from kitchen surfaces through to paving slabs.You Can Expect Durability and Longevity. Firstly, marble is so popular around the world because of its durability in a wide variety of weather conditions. Structures that are over hundreds of years old made from marble are still standing to this day, and look as pristine as they day they were crafted.
Explanation:
Answer:
Let the second medium be air (n₁=1)
The refractive index n₂ of the medium where first medium is air is found (a)
(a) n₂ = 2
Explanation:
Critical angle can be defined as the angle of incidence that provides the angle of refraction of 90°.
Refractive index of a medium can be defined as a number that describes that how fast a light will travel through that medium.
Critical angle and Refractive index are related by:
To find refractive index of medium with respect to air, substitute n₁=1 (Refractive index of air is 1)
Also θ(critical)=30°
Find n₂ :
I'm not that smart but I think it is c I really hope It helps
