Please Help! 1) if Si is at 500k, which of the following statements are correct
ID: 1642206 • Letter: P
Question
Please Help!
1) if Si is at 500k, which of the following statements are correct (choose only one)
a) CB & VB are completely empty
b) CB & VB are completely filled
c) CB & VB are partially empty
d) CB & VB are partially filled
e) none of the above
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2) If Si material is at 300k, which of the following statements are correct
a) CB band is partially filled and VB is completely filled
b) VB band is partially filled and CB is completely filled
c) CB band is partially empty and VB is partially filled
d) VB band is partially empty and CB is partially filled
e) none of the above
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3) A Si material (Eg=1.12eV) is at 0k, photons with energy of 0.7 eV was applied, which of the following statements are correct
a) CB band is completely empty and VB is completely filled
b) VB band is completely empty and CB is completely filled
c) CB band is partially empty and VB is completely filled
d) VB band is partially empty and CB is completely filled
e) none of the above
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4) A Si material (Eg=1.12eV) is at 300k, photons with energy of 1.7 eV was applied, which of the following statements are correct
a) CB band is completely empty and VB is completely filled
b) VB band is completely empty and CB is completely filled
c) CB band is partially empty and VB is completely filled
d) VB band is partially empty and CB is completely filled
e) none of the above
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5) A Si material is at 500k, which of the following statements are correct
a) CB band is partially filled and VB is completely filled
b) VB band is aprtially filled and CB is completely filled
c) CB band is partially empty and VB is partially filled
d) VB band is partially empty and CB is partially filled
e) none of the above
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6) A Si material (Eg=1.12eV) is at 300k, photons with energy of 0.7 eV was applied, which of the following statements are correct
a) CB band is completely empty and VB is completely filled
b) VB band is completely empty and CB is completely filled
c) CB band is partially empty and VB is completely filled
d) VB band is partially empty and CB is completely filled
e) none of the above
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7) A Si material is at 0k, which of the following statements are correct
a) CB band is completely empty and VB is completely filled
b) VB band is completely empty and CB is completely filled
c) CB band is partially empty and VB is completely filled
d) VB band is partially empty and CB is completely filled
e) none of the above
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8) A Si material (Eg=1.12eV) is at 300k, photons with energy of 0.7 eV was applied, which of the following statements are correct
a) CB and VB are completely empty
b) CB and VB are completely filled
c) CB and VB are partially empty
d) CB and VB are partially filled
e) none of the above
-----
9) A Si material is at 300k, which of the following statements are correct
a) CB band is completely empty and VB is completely filled
b) VB band is completely empty and CB is completely filled
c) CB band is partially empty and VB is completely filled
d) VB band is partially empty and CB is completely filled
e) none of the above
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10) A Si material (Eg=1.12eV) is at 300k, photons with energy of 1.7 eV was applied, which of the following statements are correct
a) CB band is partially filled and VB is completely filled
b) VB band is partially filled and CB is completely filled
c) CB band is partially empty and VB is partially filled
d) CB band is partially empty and CB is partially filled
e) none of the above
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11) A Si material (Eg=1.12eV) is at 0k, photons with energy of 0.7 eV was applied, which of the following statements are correct
a) CB band is partially filled and VB is completely filled
b) VB band is partially filled and CB is completely filled
c) CB band is partially empty and VB is partially filled
d) VB band is partially empty and CB is partially filled
e) none of the above
--------
12) A Si material (Eg=1.12eV) is at 300k, photons with energy of 1.7 eV was applied, which of the following statements are correct
a) CB and VB are completely empty
b) CB and VB are completely filled
c) CB and VB are partially empty
d) CB and VB are partially filled
e) none of the above
-------
13) A Si material is at 300k, which of the following statements are correct
a) CB and VB are completely empty
b) CB and VB are completey filled
c) CB and VB are partially empty
d) CB and VB are partially filled
e) none of the above
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14) A Si material is at 0k, which of the following statements are correct
a) CB band is partially filled and VB is completely filled
b) VB band is partially filled and CB is completely filled
c) CB band is partially empty and VB is partially filled
d) VB band is partially empty and CB is partially filled
e) none of the above
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15) A Si material is at 0k, which of the following statements are correct
a) CB and VB are completely empty
b) CB and VB are completely filled
c) CB and VB are partially empty
d) CB and VB are partially filled
e) none of the above
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16) A Si material is at 500k, which of the following statements are correct
a) CB band is completely empty and VB is completely filled
b) VB band is completely empty and CB is completely filled
c) CB band is partially empty and VB is completely filled
d) VB band is partially empty and CB is completely filled
e) none of the above
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17) A Si material (Eg=1.12eV) is at 300k, photons with energy of 0.7 eV was applied, which of the following statements are correct
a) CB band is partially filled and VB is completely filled
b) VB band is partially filled and CB is completely filled
c) CB band is partially empty and VB is partially filled
d) VB band is partially empty and CB is partially filled
e) none of the above
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18) A Si material (Eg=1.12eV) is at 0k, photons with energy of 0.7 eV was applied, which of the following statements are correct
a) CB and VB are completely empty
b) CB and VB are completely filled
c) CB and VB are partially empty
d) CB and VB are partially filled
e) none of the above
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Explanation / Answer
c) CB & VB are partially empty
At 500K, some electrons from the VB are excited to the CB and hence the valence band and the conduction band are partially filled.