Explanation:
(1)
Well use the Planck’s equation to find the frequency of the laser;
E = hν where;
E = energy
h = Planck's constant = 6.626 x 10-34 J·s
ν = frequency
3.027 × 10−19 = 6.626 x 10-34v
v = 3.027 × 10−19/6.626 x 10-34
v = 4.57 x 10^14
To find wavelength;
v =c / λ where;
c = speed of light = 3 x 10^8 m/sec
4.57 x 10^14 = 3 x 10^8 / λ
λ = 3 x 10^8/4.57 x 10^14
= 6.56 x 10^-7 m
(2)
1 mole of photons is made up of 6.02 x 10^23 photons. Therefore the total energy in 1 mole of the photons is;
3.027 × 10−19 * 6.02 x 10^23
= 1.822 x 10^5 J
(3)
Based on the wavelength of the laser which is 6.56 x 10^-7 m, the color of the laser is RED. The red light of the visible electromagnetic spectrum ranges between 6.25 x 10^-7 - 7.00 x 10^-7 m
