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
7.5 × 10¹⁴ Hz is the highest frequency of visible light when wavelengths of visible light range from 400 nm to 700 nm.
The distance a wave travels in one unit of time is known as the wave speed (v).Taking into account that the wave travels one wavelength in one interval,
v=λ/T
Given that T = 1/f, we can write the equation above as,
V = f λ
Given data:
Minimum wavelength of visible light = 400 nm = 4 × 10⁻⁷ m
Speed of light = 3 × 10⁸ m/s
Frequency = c/λ = 3 × 10⁸ / 4 × 10⁻⁷
= 7.5 × 10¹⁴ Hz
To learn more about Frequency: brainly.com/question/16200748
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True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected
I think it would be d because development in nations needs more population
Answer:
In 5 years or so, the sun will be awash in sunspots and more prone to violent bursts of magnetic activity.
Explanation
once the magnetic field weakens the area and cold plasma enters the area of the sunspot
