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JEE PHYSICS MCQ: DUAL NATURE OF RADIATION AND MATTER
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If is the velocity of light in free space, the correct statements about photon among the following are:
A. The energy of a photon is
B. The velocity of a photon is
C. The momentum of a photon,
D. In a photon-electron collision, both total energy and total momentum are conserved.
E. Photon possesses positive charge.
Choose the correct answer from the options given below:
A. The energy of a photon is
B. The velocity of a photon is
C. The momentum of a photon,
D. In a photon-electron collision, both total energy and total momentum are conserved.
E. Photon possesses positive charge.
Choose the correct answer from the options given below:
View answer and explanation
Correct option: A
A, B, C and D only
Option A is correct. The energy of a photon is , its velocity is , its momentum is , and in a photon-electron collision, both total energy and total momentum are conserved.
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(i) the energy of the incident photons
(ii) the maximum kinetic energy of the photoelectrons emitted. An electron is accelerated by a potential difference of V volt to acquire kinetic energy equal to maximum kinetic energy of ejected photoelectron from a metal of work function 3.2 eV, using a light of wavelength Value of V is Two monochromatic beams and of equal intensity , hit a screen. The number of photons hitting the screen by beam is twice that by beam . Then, what can inference you about their frequencies? A 5 W source emits monochromatic light of wavelength . When placed 0.5 m away, it liberates photoelectrons from a photosensitive metallic surface. When the source is moved to a distance of 1.0m, the number of photoelectrons liberated will be reduced by a factor of