JEE Main & Advanced JEE Main Paper (Held On 19 May 2012)

  • question_answer
    This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: A metallic surface is irradiated by a monochromatic light of frequency \[\upsilon >{{\upsilon }_{0}}\] (the threshold frequency). If the incident frequency is now doubled, the photocurrent and the maximum kinetic energy are also doubled. Statement 2: The maximum kinetic energy of photoelectrons emitted from a surface is linearly dependent on the frequency of the incident light. The photocurrent depends only on the intensity of the incident light.     JEE Main  Online Paper (Held On 19  May  2012)

    A) Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of Statement 1.

    B)                        Statement 1 is false. Statement 2 is true.

    C)                        Statement 1 is true, Statement 2 is false.

    D)                        Statement 1 is true, Statement 2 is true, Statement 2 is not the correct explanation of Statement 1.

    Correct Answer: B

    Solution :

                    The maximum kinetic energy of photoelectrons depends upon frequency on incident light and photo current depends upon intensity of incident light.


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