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Maximum kinetic energy (Ek) of photoelectrons varies with frequency (v) of incident radiation as shown in graph: 

Maximum kinetic energy (Ek) of photoelectrons varies with frequency (v) of incident radiation as shown in graph:  Correct Answer <img alt="F1 Utkarsha 25.11.20 Pallavi D6" src="//storage.googleapis.com/tb-img/production/20/11/F1_Utkarsha_25.11.20_Pallavi_D6.png" style="width: 126px; height: 116px;">

Concept:

  • Photoelectric Effect: The phenomena by which rays of light falling on the metal surface make electrons ejected out of the metal surface is known as the Photoelectric Effect.
    • Work Function (ϕ) =The minimum energy required to eject an electron out of metal is known as work function. 
    • The Einstein equation for the photoelectric effect is given as: 

K = hν - ϕ 

Where h is Planck's constant, ν is the frequency of light falling K is the maximum kinetic energy of an electron ejected.

So, this graph is represented in the given options as

[ alt="F1 Utkarsha 25.11.20 Pallavi D6" src="//storage.googleapis.com/tb-img/production/20/11/F1_Utkarsha_25.11.20_Pallavi_D6.png" style="box-sizing: border-box; border: 0px; background-color: rgb(255, 255, 255); width: 126px; height: 116px;">

So, this graph is the correct option.

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