Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- Calculate the energy of a photon with momentum 3.3 10^ -13 kg ,m ,s^ -1 . (Take, Planck's constant to be 6.6 10^ -34 J s)
- A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest. If the...
- A particle of mass 1 mg has the same wavelength as an electron moving with a velocity of 3 10^ 6 m ,s^ -1 . The velocity of the...
- Monochromatic light of frequency 6.0 10^ 14 Hz is produced by a laser. The power emitted is 2 10^ -3 W. The number of photons...
- What is de-Broglie wavelength of electron having energy 10 keV?
- What is the de-Broglie wavelength of the electron accelerated through potential difference of 100 V?
- The energy of a photon is equal to the kinetic energy of a proton. If _1 is the de-Broglie wavelength of a proton, _2 the...
- If the linear momentum of a particle is 2.2 10^ 4 kg ,m ,s^ -1 , then what will be its de-Broglie wavelength? (Take, h = 6.6 10^...
- The kinetic energy of an electron gets tripled, then the de-Broglie wavelength associated with it changes by a factor
- The de-Broglie wavelength of the electron in the ground state of the hydrogen atom is (Take, radius of the first orbit of...
- An -particle and a proton are accelerated from rest by a potential difference of 100 V. After this, their de-Broglie wavelengths...
- An electron of mass m_e and a proton of mass m_p are moving with the same speed. The ratio of their de-Broglie wavelength _e/ _p...
- Electrons with de-Broglie wavelength fall on the target in an X-ray tube. The cut-off wavelength of the emitted X-rays is
- If e/m of electron is 1.76 10^ 11 C ,kg^ -1 and stopping potential is 0.71 V, then the maximum velocity of the photoelectron is
- The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectric emission from this...
- The act of photoelectric effect taking place with a certain photosensitive metal depends upon (i) frequency and (ii) intensity of...
- A point source of light is used in a photoelectric effect. If the source is removed farther from the emitting metal, then the...
- If the frequency of light in a photoelectric experiment is doubled, then stopping potential will
- The work function for aluminium is 4.125 eV. The cut-off wavelength for photoelectric effect for aluminium will be
- According to Einstein's photoelectric equation, the graph of KE of the photoelectron emitted from the metal versus the frequency...
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