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प्रश्न
The work functions for metals A, B and C are 1.92 eV, 2.0 eV and 5.0 eV respectively. The metal/metals which will emit photoelectrons for a radiation of wavelength 4100Å is/are
विकल्प
A only
both A and B
all these metals
none
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उत्तर
both A and B
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संबंधित प्रश्न
When a metallic surface is illuminated with radiation of wavelength λ, the stopping potential is V. If the same surface is illuminated with radiation of wavelength 2λ, the stopping potential is `"V"/4`. The threshold wavelength for the metallic surface is
In photoelectric emission, a radiation whose frequency is 4 times threshold frequency of a certain metal is incident on the metal. Then the maximum possible velocity of the emitted electron will be
A light of wavelength 500 nm is incident on a sensitive metal plate of photoelectric work function 1.235 eV. The kinetic energy of the photoelectrons emitted is (Take h = 6.6 × 10–34 Js)
What is the photoelectric effect?
Give the definition of intensity of light according to quantum concept and its unit.
How will you define threshold frequency?
What is a photocell?
Mention the different types of photocells.
What is a surface barrier?
Explain how frequency of incident light varies with stopping potential.
