from rarefaction to rarefaction for a longitudinal wave
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Answer:
λ = 3.1824 10-25 m
Explanation:
To release the electron from the power well the absorbed photon electro must be greater than or equal to the energy of the electron in the power well
The photon energy is E_photon = 0.625 J
The speed of light is
c = λ f
Let's use Planck's equation
E = h f
We substitute
E = h c / λ
λ = h c / E
λ = 6.63 10-34 3 108 / 0.625
λ = 3.1824 10-25 m
Answer:
Option a.
Total area of the cells to generate 6.7 kW, A = 61.4 
Given:
The efficiency of the cell,
= 9.1%
Power generated by the cells, P = 6.7 kW
Intensity of light, I = 1200 W/ 
Solution:
Using the formula for intensity of light, I = 
rearranging the above formula for Area, A:
Area, A = 
Now, putting values in the above formula:
Area, A = 
Area, A = 61.355 ≈ 61.4 