EASY
JEE Main
IMPORTANT
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Given below are two statements:
Statement Two photons having equal linear momenta have equal wavelengths.
Statement If the wavelength of the photon is decreased, then the momentum and energy of a photon will also decrease.
In the light of the above statements, choose the correct answer from the options given below.
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Important Questions on Dual Nature of Matter and Radiation
EASY
JEE Main
IMPORTANT
The de Broglie wavelength of a proton and -particle are equal. The ratio of their velocities is
HARD
JEE Main
IMPORTANT
An particle and a proton are accelerated from rest by a potential difference of . After this, their de Broglie wavelengths are and respectively. The ratio is :
EASY
JEE Main
IMPORTANT
An electron of mass and a proton of mass are moving with the same speed. The ratio of their de Broglie wavelength will be :
MEDIUM
JEE Main
IMPORTANT
The stopping potential for electrons emitted from a photosensitive surface illuminated by light of wavelength is When the incident wavelength is changed to a new value, the stopping potential is The new wavelength is :
MEDIUM
JEE Main
IMPORTANT
Two stream of photons, possessing energies equal to twice and ten times the work function of metal are incident on the metal surface successively. The value of ratio of maximum velocities of the photoelectrons emitted in the two respective cases is . The value of is
HARD
JEE Main
IMPORTANT
When radiation of wavelength is used to illuminate a metallic surface, the stopping potential is . When the same surface is illuminated with radiation of wavelength , the stopping potential is . If the threshold wavelength for the metallic surface is then value of will be :
MEDIUM
JEE Main
IMPORTANT
A particle is moving times as fast as an electron. The ratio of the de-Broglie wavelength of the particle to that of the electron is . The mass of the particle is close to :
EASY
JEE Main
IMPORTANT
When the wavelength of radiation falling on a metal is changed from , the maximum kinetic energy of the photoelectrons becomes three times larger. The work function of the metal is close to:
