Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Dual Nature of Radiation question

2021 · 17 Mar · Shift 2 · Q48
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Dual Nature of Radiation
  5. /2021 · 17 Mar · Shift 2 · Q48

Dual Nature of Radiation question

2021 · 17 Mar · Shift 2 · Q48

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
Two identical photocathodes receive the light of frequencies f1 and f2 respectively. If the velocities of the photo-electrons coming out are v1 and v2 respectively, then
  1. A
    v1−v2=[2hm(f1−f2)]12{v_1} - {v_2} = {\left[ {{{2h} \over m}({f_1} - {f_2})} \right]^{{1 \over 2}}}v1​−v2​=[m2h​(f1​−f2​)]21​
  2. B
    v12+v22=2hm[f1+f2]v_1^2 + v_2^2 = {{2h} \over m}[{f_1} + {f_2}]v12​+v22​=m2h​[f1​+f2​]
  3. C
    v1+v2=[2hm(f1+f2)]12{v_1} + {v_2} = {\left[ {{{2h} \over m}({f_1} + {f_2})} \right]^{{1 \over 2}}}v1​+v2​=[m2h​(f1​+f2​)]21​
  4. D
    v12−v22=2hm[f1−f2]v_1^2 - v_2^2 = {{2h} \over m}[{f_1} - {f_2}]v12​−v22​=m2h​[f1​−f2​]
PreviousNext

More from Dual Nature of Radiation

  • A particle is travelling 4 time as fast as an electron. Assuming the ratio of de-Broglie wavelength of a particle to that of electron is 2 : 1, the mass of the particle is :2021 · MCQ
  • The radiation corresponding to 3 → 2 transition of a hydrogen atom falls on a gold surface to generate photoelectrons. The electrons are passed through a magnetic field of 5 × 10 − 4 T. Assume that the radius of the largest…2021 · MCQ
  • An electron having de-Broglie wavelength λ is incident on a target in a X-ray tube. Cut-off wavelength of emitted X-ray is :2021 · MCQ
  • A certain metallic surface is illuminated by monochromatic radiation of wavelength λ. The stopping potential for photoelectric current for this radiation is 3V0. If the same surface is illuminated with a radiation of wavelength 2 λ…2021 · Numerical
  • An electron of mass me and a proton of mass mp are accelerated through the same potential difference. The ratio of the de-Broglie wavelength associated with the electron to that with the proton is2021 · MCQ
  • Given below are two statements : Statement I : Two photons having equal linear momenta have equal wavelengths. Statement II : If the wavelength of photon is decreased, then the momentum and energy of a photon will also decrease. In the…2021 · MCQ
  • An X-ray tube is operated at 1.24 million volt. The shortest wavelength of the produced photon will be :2021 · MCQ
  • The de-Broglie wavelength of a proton and α-particle are equal. The ratio of their velocities is :2021 · MCQ