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The graph between the stopiing potential open parentheses V subscript 0 end subscript close parenthesesand left parenthesis 1 divided by lambda right parenthesis is shown in figure, ϕ subscript 1 end subscript comma ϕ subscript 2 end subscriptand ϕ subscript 3 end subscript are work functions Which of the following is

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  1. ϕ subscript 1 end subscript colon ϕ subscript 2 end subscript colon ϕ subscript 3 end subscript equals 1 colon 2 colon 3    
  2. ϕ subscript 1 end subscript colon ϕ subscript 2 end subscript colon ϕ subscript 3 end subscript equals 4 colon 2 colon 1    
  3. tan q, is directly proportional to hc/ e where h is Planck’s constant ad c is the speed of light    
  4. ultraviolet light can be used to emit photoelectrons from metal 2 and metal 3 only.    

    Answer:The correct answer is: tan q, is directly proportional to hc/ e where h is Planck’s constant ad c is the speed of light

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