Dual Nature of Matter and Radiation questions
494 published questions with worked solutions.
- Assertion A : In photoelectric effect, on increasing the intensity of incident light the stopping potential increases. Reason R:...
- An electron is released from rest near an infinite non-conducting sheet of uniform charge density '- '. The rate of change of...
- A photoemissive substance is illuminated with a radiation of wavelength _i so that it releases electrons with de-Broglie...
- The radiation corresponding to 3 2 transition of hydrogen atom falls on a metal surface to produce photoelectrons. These...
- Radiation of wavelength λ, is incident on a photocell. The fastest emitted electron has speed v. If the wavelength is changed to...
- A particle A of mass m and initial velocity v collides with a particle B of mass m 2 which is at rest. The collision is head on,...
- The de-Broglie wavelength ( _B) associated with the electron orbiting in the second excited state of hydrogen atom is related to...
- Two particles move at right angle to each other. Their de-Broglie wavelengths are _1 and _2 respectively. The particles suffer...
- A nucleus A, with a finite de-Broglie wavelength _A, undergoes spontaneous fission into two nuclei B and C of equal mass. B flies...
- The electric field of light wave is given as E = 10^ -3 ( 2 x 5 10^ -7 - 2 6 10^ 14 t ) x N C . This light falls on a metal plate...
- Light is incident normally on a completely absorbing surface with an energy flux of 25 W cm^ -2 . If the surface has an area of...
- A 2 mW laser operates at wavelength of 500 nm. The number of photons that will be emitted per second is: [Given Planck's constant...
- Two electrons are moving with non-relativistic speeds perpendicular to each other. If corresponding de Broglie wavelengths are _1...
- 50 W/m^2 energy density of sunlight is normally incident on the surface of a solar panel. Some part of incident energy (25%) is...
- A particle 'P' is formed due to a completely inelastic collision of particles 'x' and 'y' having de-Broglie wavelengths ' _x' and...
- In a photoelectric effect experiment the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm,...
- The magnetic field associated with a light wave is given, at the origin, by B = B_0[ (3.14 10^ 7 )ct + (6.28 10^ 7 )ct]. If this...
- Surface of certain metal is first illuminated with light of wavelength _1 = 350 nm and then, by light of wavelength _2 = 540 nm....
- A particle A of mass 'm' and charge 'q' is accelerated by a potential difference of 50 V. Another particle B of mass '4m' and...
- In a photoelectric experiment, the wavelength of the light incident on a metal is changed from 300 nm to 400 nm. The decrease in...
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