Define : (i)Threshold frequency (ii)Work function

Define : (i)Threshold frequency (ii)Work function
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Answer :

Threshold frequency: The minimum frequency of incident radiation at which emission of photoelectrons starts is called Threshold frequency. 

Work function: The amount of energy required to detach the electron from metal surface is called work function. 
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When a certain beam of light falls upon a metal surface, it ejects photoelectrons from it. The number of photoelectrons ejected per second by the beam of light depends upon one of the following. Is it proportional to: w) the threshold frequency of the metal x) the work function of the metal y) the frequency of the beam z) the intensity of the beam

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What is "renal threshold"?

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Is it true that absolute threshold is the minimum amount of the stimulus the human body can detect?

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What is the sequence of events of a threshold potential?

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What is the purchase account may be used as a contracting mechanism for purchases above the micro purchase threshold?

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What is Seizure threshold?

Description : What is Seizure threshold?

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Why does the poverty threshold vary from year to year?

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What is the sequence of events of a threshold potential?

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When it comes to housing and living in an apartment, what is the threshold for being considered 'low income'?

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Antitussives act by (a) Liquifying bronchial secretions (b) Raising the threshold of cough centre (c) Reducing cough inducing impulses from the lungs (d) Both (b) and (c)

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