Dual Nature of Radiation & Matter – JEE Main Quiz

Q1. The de Broglie wavelength of an electron having kinetic energy E is λ. If kinetic energy becomes E/4, its wavelength will be:

Q2. Ratio of de Broglie wavelengths of proton and electron having same kinetic energy (mp = 1849 me):

Q3. UV light of energy 4.13 eV is incident on a metal of work function 3.13 eV. Maximum kinetic energy of photoelectrons is:

Q4. Threshold frequency of a metal with work function 6.63 eV is:

Q5. Proton and electron have same de Broglie wavelength. Ratio of their kinetic energies (Kp : Ke):

Q6. In Franck–Hertz experiment, first dip is at 10.2 V. Wavelength of emitted light (nm):

Q7. An electron enters magnetic field B perpendicular to velocity. Its de Broglie wavelength after time t will be:

Q8. Proton and electron will have same de Broglie wavelength when ratio of their momenta is:

Q9. Ratio of de Broglie wavelengths of electron in ground state to third excited state of hydrogen is:

Q10. A proton has same energy as photon of wavelength λ. Ratio of de Broglie wavelength of proton to photon wavelength is: