📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    ⚡ Azaadi sale - Celebrate Independence Day with Flat 55% Off On all courses! 13 to 17 Aug ⚡ Enroll Now

    Question

    A metal surface has a threshold frequency of 4.0 ×

    10¹⁴ Hz.  When light of frequency 9.0 × 10¹⁴ Hz  is incident on it, what is the stopping potential required to halt the fastest photoelectrons? (Take h = 6.63 × 10⁻³⁴ Js, e = 1.6 × 10⁻¹⁹ C)
    A 1.25 V Correct Answer Incorrect Answer
    B 2.07 V Correct Answer Incorrect Answer
    C 3.56 V Correct Answer Incorrect Answer
    D 4.08 V Correct Answer Incorrect Answer

    Solution

    According to the photoelectric equation:

    Practice Next

    Relevant for Exams:

    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call