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Find out voltage applied to an electron microscope to produce electron of wavelength 0.6 A∘.

Important Questions on Dual Nature of Matter and Radiation

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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>BEGINNER'S BOX - 3>Q 6
What is the effective mass of a photon having wavelength λ?
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 1
The energy of photon of visible light with maximum wavelength in eV is :
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 2
What is the momentum of a photon having frequency 1.5 x 1013 Hz
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 3
The strength of photoelectric current is directly proportional to :
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 4
When light is incident on a surface, photo electrons are emitted. For photoelectrons :
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 5
When light falls on a photosensitive surface, electrons are emitted from the surface. The kinetic energy of these electrons does not depend on the:
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 6
The work- function of a photosensitive substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately:
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Beta Question Bank for Medical: Physics>Chapter 32 - Dual Nature of Matter and Radiation>Exercise (Conceptual Questions)>Q 7
Photoelectric effect takes place in element A. Its work function is 2.5 eV and threshold wavelength is λ. An other element B is having work function of 5 eV. Then find out the maximum wavelength that can produce photoelectric effect in B :