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12th Odisha Board
IMPORTANT
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The saturation current in a diode depends on

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Important Questions on Electron Emission

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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 9
In a full-wave rectifier circuit operating from 50Hz mains frequency, the fundamental frequency of its output is
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 10
In a half-wave rectifier, the RMS value of a.c components is
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 11
There is an increase in threonic current when the
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 12

When the grid of a triode is at highly negative potential with respect to its cathode 

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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 13
The relation between triode constant is 
MEDIUM
12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 14

On which one of the following factors, the amplification factors of a triode valve depends?

a) Temperature of the cathode b) Temperature of anode c) Supplied plate voltage d) relative positions of cathode, grid and anode.

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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 15
For a given plate voltage, the plate current in a triode valve is maximum when the potential of 
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12th Odisha Board
IMPORTANT
Bureau's Higher Secondary Physics Class 12>Chapter 18 - Electron Emission>MODEL QUESTIONS>Q 16
When a triode is used as an amplifier, the phase difference between the input signal voltage and the output is