In an electron diffraction experiment using graphite the larger ring formed by rows of carbon atoms 1.23 x 10-¹0 m apart was formed at an angle of 0.167 radian. a) What is the wavelength? [0 in radians =2 / b where b is the diffracting object size] b) Write an expression for the kinetic energy of an electron (½ mv²) in terms of its charge, and accelerating voltage V (c) Obtain an expression for momentum, p, in terms of e, V and m.
In an electron diffraction experiment using graphite the larger ring formed by rows of carbon atoms 1.23 x 10-¹0 m apart was formed at an angle of 0.167 radian. a) What is the wavelength? [0 in radians =2 / b where b is the diffracting object size] b) Write an expression for the kinetic energy of an electron (½ mv²) in terms of its charge, and accelerating voltage V (c) Obtain an expression for momentum, p, in terms of e, V and m.
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![In an electron diffraction experiment using graphite the larger ring formed by rows of
carbon atoms 1.23 x 10-¹0 m apart was formed at an angle of 0.167 radian.
a) What is the wavelength? [0 in radians =2 / b where b is the diffracting object size]
b) Write an expression for the kinetic energy of an electron (½ mv²) in terms of its charge,
and accelerating voltage V
(c) Obtain an expression for momentum, p, in terms of e, V and m.
(d) Plot Utherm [mV] versus T[K] graph in milimetric paper and verify the Stefan Stefan-
Boltzmann's law of radiation.
U[V]
1
2
567GAWN
3
4
5
6
7
8
I[A]
2.20
2.80
3.45
4.00
4.45
4.90
5.30
5.70
Utherm [mV]
0.15
0.62
1.30
2.20
3.20
4.45
5.90
7.50
T[K]
672
983
1160
1300
1430
1540
1630
1720](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa54d3aeb-3484-483d-bddf-027a70ceb6f9%2Fe2c69be1-4af4-4a9c-9d8a-14b51fe89032%2Fcv2gvgj_processed.png&w=3840&q=75)
Transcribed Image Text:In an electron diffraction experiment using graphite the larger ring formed by rows of
carbon atoms 1.23 x 10-¹0 m apart was formed at an angle of 0.167 radian.
a) What is the wavelength? [0 in radians =2 / b where b is the diffracting object size]
b) Write an expression for the kinetic energy of an electron (½ mv²) in terms of its charge,
and accelerating voltage V
(c) Obtain an expression for momentum, p, in terms of e, V and m.
(d) Plot Utherm [mV] versus T[K] graph in milimetric paper and verify the Stefan Stefan-
Boltzmann's law of radiation.
U[V]
1
2
567GAWN
3
4
5
6
7
8
I[A]
2.20
2.80
3.45
4.00
4.45
4.90
5.30
5.70
Utherm [mV]
0.15
0.62
1.30
2.20
3.20
4.45
5.90
7.50
T[K]
672
983
1160
1300
1430
1540
1630
1720
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