Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- A point source of light is used in a photoelectric effect. If the source is removed farther from the emitting metal, then the...
- In photoelectric effect, keeping the frequency of incident radiation and accelerating potential fixed, if the intensity of...
- The kinetic energy of a free electron increases to 3 times the previous K.E. The ratio of new de-Broglie wavelength to previous...
- Photoelectric emission is observed from a metallic surface for frequencies _1 and _2 of the incident light rays ( _1 > _2) If the...
- The de Broglie wavelength of the electron in the ground state is _1 and that in the n = 3 level is _3 then _3 is given by
- The maximum kinetic energies of photoelectrons emitted are K<sub>1</sub> and K<sub>2</sub> when light of wavelength _1 and _2...
- In case of photoelectric emission from certain metal, the cutoff frequency is . If the radiation of frequency 3 is incident on...
- If the kinetic energy of a particle is increased to 16 times, the percentage change in the de Broglie wavelength of a particle is
- An electron accelerated by a potential difference 'V' has de-Broglie wavelength ' '. If the electron is accelerated by a...
- The maximum velocity of the photoelectrons emitted by a metal surface is 9 10^5 m/s. The value of ratio of charge (e) to mass (m)...
- Light of wavelength strikes a photoelectric surface and electrons are ejected with energy E. If E is to be increased to twice the...
- In a photoelectric experiment, if the intensity of incident light is doubled and the frequency is kept slightly greater than...
- When light of wavelengths ' ' incident on a photosensitive surface, the stopping potential is 'V'. When a light of wavelength 1.5...
- According to Einstein's photoelectric equation, the graph of the kinetic energy of the emitted photoelectrons versus the...
- On a photosensitive material, when frequency of incident radiation is increased by 20%, maximum kinetic energy of emitted...
- Light of wavelength ' ' falls on a metal having work function hc _0 . Photoelectric effect will take place only if ( _0 is the...
- A parallel beam of light is incident normally on a pane surface absorbing 50% of the light and reflecting the rest. If the...
- Two identical photocathodes receive light of frequencies n_1 and n_2 . If the velocities of the emitted photoelectrons of mass m...
- The proton and -particle are accelerated through same potential difference. Then the ratio of the de-Broglie wavelength of proton...
- When a light of wavelength falls on the emitter of a photocell, maximum speed of emitted photoelectrons is V. If the incident...
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