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EC, Ev and EF are conduction band, valence band and forbidden energy gap, respectively, for a solid. If lattice constant increases, then

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Important Questions on Electronic Devices

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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 14
The band gaps of an insulator, conductor and semiconductor are respectively Eg1, Eg2 and Eg3. The relationship between them is given as _____.
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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 15
Consider a situation in which reverse biased current of a particular P-N junction increases when it is exposed to a light of wavelength ≤621 nm. During this process, enhancement in carrier concentration takes place due to generation of hole-electron pairs. The value of band gap is nearly.
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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 16
The scientific principle involved in 'Laser' is____
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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 17
In germanium crystal, the forbidden energy gap in joule is:-
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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 18
The forward biased diode connection is :
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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 19
In an unbiased p - n junction electrons diffuse from n-region to p-region because:
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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 20
The reading of the ammeter for a silicon diode in the given circuit is:

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Physics Crash Course NEET>Chapter 21 - Electronic Devices>Level 1>Q 21
A donor impurity results in