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A solid reflects incident light and its ...

A solid reflects incident light and its electrical conductivity decreases with temperature. The binding in this solids

A

Ionic

B

Covalent

C

Metallic

D

Molecular

Text Solution

Verified by Experts

The correct Answer is:
C
Metals reflects incident light by the vibrations of free electrons under the infulence of electric field of incidence wave. The conductivity of metals decreases with increases of temperature due to increases in random motion of free electrons. The bonding is therefore metallic.
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A2Z-SEMICONDUCTOR ELECTRONICS-EXERCISE
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  2. In a semiconductor,

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  4. Energy band in solids are a consequence of

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  5. When forward bias is applied to a P-N junction, then what happence to ...

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  6. When npn transistor is used as an amplifler

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  7. For a transistor ampliflier in common emiter configuration for load im...

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  8. If a full wave reactifier circuit is operating from 50 Hz mains, the f...

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  9. In a common base ampifier , the phase difference between the input sig...

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  10. To obtain a P-type Si semiconductor, we need to dope pure Si with

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  11. Two PN-junction can be connected in series by three different methods ...

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  12. In a p- n junction diode not connected to any circuit,

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  13. Which of the following statements is not true?

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  14. The dominant mechanisms for motion of charge carriers in forward and r...

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  15. For a given plate voltage , the plate current in a triode valve is max...

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  16. The probbility of electrons to be found in the conduction band of an i...

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  17. The typical ionisation energy of a donor in silicon is

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  19. The circuit shown in following figure contanis two diode D(1) and D(2)...

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  20. The following configuration of gate is equivalent to

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  21. The output of a NAND gate is 0

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