Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- When light of a given wavelength is incident on a metallic surface, the minimum potential needed to stop the emitted...
- With reference to the observations in photo-electric effect, identify the correct statements from below: (A) The square of...
- An electron (mass m) with an initial velocity v = v_ 0 i (v_ 0 = 0) is moving in an electric field E = E_ 0 i (E_ 0 > 0) where E_...
- The equation = 1.227/x nm can be used to find the de- Broglie wavelength of an electron. In this equation x stands for: Where m =...
- Let K_ 1 and K_ 2 be the maximum kinetic energies of photo-electrons emitted when two monochromatic beams of wavelength _ 1 and _...
- The de Broglie wavelengths for an electron and a photon are _ e and _ p respectively. For the same kinetic energy of electron and...
- The kinetic energy of emitted electron is E when the light incident on the metal has wavelength . To double the kinetic energy,...
- The electric field at a point associated with a light wave is given by E = 200[ (6 10^ 15 )t + (9 10^ 15 )t] Vm^ -1 . Given : h =...
- Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : The...
- A hydrogen atom, initially at rest in its ground state, absorbs a photon of frequency _1 and ejects the electron with a kinetic...
- The kinetic energy of an electron, an -particle and a proton are given as 4 K, 2 K and K respectively. The de-Broglie wavelength...
- In photo electric effect A. The photocurrent is proportional to the intensity of the incident radiation. B. Maximum kinetic...
- The de Broglie wavelength of a molecule in a gas at room temperature (300 K) is _1. If the temperature of the gas is increased to...
- A metallic surface is illuminated with radiation of wavelength , the stopping potential is V_0. If the same surface is...
- Given below are two statements: Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the...
- An atom absorbs a photon of wavelength 500 nm and emits another photon of wavelength 600 nm. The net energy absorbed by the atom...
- The difference between threshold wavelengths for two metal surfaces A and B having work function _A = 9 eV and _B = 4.5 eV in nm...
- The de Broglie wavelength of an electron having kinetic energy E is . If the kinetic energy of electron becomes E 4 , then its...
- An -particle, a proton and an electron have the same kinetic energy. Which one of the following is correct in case of their...
- From the photoelectric effect experiment, following observations are made. Identify which of these are correct. A. The stopping...
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