2. Questions Bank
  3. JEE Main & Advanced
  4. Physics
  5. Photo Electric Effect, X- Rays & Matter Waves

JEE Main & Advanced Physics Photo Electric Effect, X- Rays & Matter Waves Question Bank X Rays

  • question_answer
    An X-ray tube operates on 30 kV. What is the minimum wavelength emitted \[(h=6.6\times {{10}^{-34}}\]Js, \[e=1.6\times {{10}^{-19}}\]Coulomb, \[c=3\times {{10}^{8}}\]ms?1)  [MP PMT 1995; DPMT 2001, 03]

    A)            0.133 Å                                   

    B)            0.4 Å

    C)            1.2 Å                                        

    D)            6.6 Å

    Correct Answer: B

    Solution :

               \[{{\lambda }_{\min }}=\frac{12375}{V}=\frac{12375}{30\times {{10}^{3}}}=0.4{\AA}\]


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