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प्रश्न
Why are solids incompressible?
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उत्तर
The intemuclear distance between the constituent particles (atoms, molecules or ions) in solids are very less. On bringing them further closer, there will be large repulsive force between electron clouds of these particles. Therefore, solids cannot be compressed.
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संबंधित प्रश्न
What is a semiconductor?
Describe the two main types of semiconductors and contrast their conduction mechanism.
Non-stoichiometric cuprous oxide, Cu2O can be prepared in laboratory. In this oxide, copper to oxygen ratio is slightly less than 2 : 1. Can you account for the fact that this substance is a p-type semiconductor?
Classify each of the following as being either a p-type or a n-type semiconductor:
- Ge doped with In
- B doped with Si
Explain the following with suitable examples:
12-16 group compounds
What type of semiconductor is obtained when
Ge is doped with In?
What type of semiconductor is obtained when
Si is doped with P?
Solids with conductivities ranging from 104 to 107 ohm-1 m-1 are ____________.
Semiconductors have conductivity (in ohm-1 m-1) in the range of ____________.
The process by which impurity is introduced in semiconductors to enhance its conductivity is known as ____________.
Electrical conductivity of semiconductors increases with increase in ____________.
Which kind of defects are introduced by doping?
Silicon doped with electron-rich impurity forms ______.
Which of the following statements are true about semiconductors?
(i) Silicon doped with electron-rich impurity is a p-type semiconductor.
(ii) Silicon doped with an electron-rich impurity is an n-type semiconductor.
(iii) Delocalised electrons increase the conductivity of doped silicon.
(iv) An electron vacancy increases the conductivity of n-type semiconductor.
Why does the electrical conductivity of semiconductors increase with rise in temperature?
Assertion: Semiconductors are solids with conductivities in the intermediate range from 10–6 – 104 ohm–1m–1.
Reason: Intermediate conductivity in semiconductor is due to partially filled valence band.
Silicon is a/an ______
