NEET Sample Paper NEET Sample Test Paper-36

  • question_answer The photoelectric threshold wavelength for potassium (work function being 2 eV) is

    A)  310 nm      

    B)  620 nm

    C)  1200 nm    

    D)  2100 nm

    Correct Answer: B

    Solution :

    \[\lambda =\frac{12375}{{{W}_{0}}}=\frac{12375}{2}=6187.5\overset{\text{o}}{\mathop{\text{A}}}\,=620\,nm\]

adversite


You need to login to perform this action.
You will be redirected in 3 sec spinner

Free
Videos