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JEE PHYSICS MCQ: DUAL NATURE OF RADIATION AND MATTER
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Given below are tow statements:
Statement I The 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 and energy of a photon will also decrease.
In the light of the above statements, choose the correct answer from the options given below.
Statement I The 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 and energy of a photon will also decrease.
In the light of the above statements, choose the correct answer from the options given below.
View answer and explanation
Correct option: C
Statement I is true but statement II is false.
Statement I is true and Statement II is false. The correct answer is C because wavelength and momentum are inversely proportional, and decreasing wavelength increases momentum and energy.
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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