Dual Nature of Matter and Radiation Questions: MCQs on Dual Nature of Matter and Radiation for JEE Main and NEET, Test Number 04
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Question 1 of 5
1. Question
4 pointsA certain metallic surface is illuminated with monochromatic light of wavelength λ. The stopping potential for photo-electric current for this light is 3V0. If the same surface is illuminated with light of wavelength 2λ, the stopping potential is V0. The threshold wavelength for this surface for photoelectric effect is [CBSE AIPMT 2015]
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Question 2 of 5
2. Question
4 pointsFind the de-Broglie wavelength of an electron with kinetic energy of 120 eV. [Karnataka CET 2015]
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Question 3 of 5
3. Question
4 pointsIf the momentum of an electron is changed by P, then the de Broglie wavelength associated with it changes by 0.5%. The initial momentum of electron will be [AIPMT MAIN EXAMINATION – 2012]
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Question 4 of 5
4. Question
4 pointsThe work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately: [AIEEE 2004]
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Question 5 of 5
5. Question
4 pointsLight of wavelength ‘λ’ which is less than threshold wavelength is incident on a photosensitive material. If incident wavelength is decreased so that emitted photoelectrons are moving with same velocity then stopping potential will [MHT CET 2016]
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