Why do you think looking for and recognizing patterns, trends, and relationships in data is important? How does recognizing thes
1 answer:
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Answer:
Δy=0.431m
Explanation:
Diffraction grating with split space d,to find the fringe position ym,we must to find the angle from
dSinα=mλ
A grating with N slits or lines per mm has slit spacing of
d=1/N
d=(1/600mm)
d=1.67×10⁻³mm
For 400nm wavelength:
α=Sin⁻¹(mλ/d)
And the position of first order lowest wavelength fringe on the screen is:
For 700nm wavelength:
α=Sin⁻¹(mλ/d)
And the position of first order highest wavelength fringe on the screen is:
The difference between the first order lowest and highest wavelength fringe is
Δy=(0.925595 - 0.49445)m
Δy=0.431m
Answer:
C: 3.93 x 10^22 free electrons
Explanation:
The no. of free electrons can be found out using the following formula:
where,
N = No. of free electrons = ?
V = Volume = 2.55 cm³
ρ = density of electrons = 1.54 x 10²² free electrons/cm³
Therefore, using these values in the equation, we get:
N = 3.93 x 10²² free electrons
Therefore, the correct option is:
<u>C: 3.93 x 10^22 free electrons</u>