Assignment
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Simple step-by-step solutions to Assignment questions of Dual Nature of Radiation and Matter from Gamma Question Bank for Engineering Physics. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.
Questions from Assignment with Hints & Solutions
A metal surface is irradiated by light of wavelength,. The most energetic emitted photoelectrons are bent in a circle of radius by a magnetic field of T perpendicular to the velocity. Then
A point source of light emitting power is placed inside at the center of a soap bubble of radius Surface of soap bubble is perfectly absorbing and is the atmospheric pressure. If is the radiation pressure on the surface of soap bubble due to point source and is the net pressure inside the soap bubble having surface tension , then choose the correct answer is the speed of light)
A beam of light of intensity is incident on a plane mirror and get reflected fully as shown in figure. The pressure exerted by beam on the mirror is ( : speed of light)
A photosensitive metal plate is exposed to a monochromatic light beam of frequency which is more than threshold frequency. Then plot of versus , is best represented by No. of photoelectrons, kinetic energy of photoelectron]
A metal surface is illuminated by light of two different wavelengths and . The maximum speed of ejected photoelectrons corresponding to these wavelengths are in the ratio . Then work function of the metal is nearly
When a metal surface is illuminated with a radiation of wavelength , the maximum kinetic energy of photoelectrons emitted is . When the same surface is illuminated by radiation of wavelength , the maximum kinetic energy of photoelectrons become . Then
When a metallic surface is illuminated with monochromatic light of wavelength , the stopping potential is When the same surface is illuminated with light of wavelength , the stopping potential is If work function of the metallic surface is , then value of is
When light of wavelength is incident on a metal surface, the stopping potential is found to be . When light of wavelength is incident on the same metal surface, the stopping potential is found to be . The cut off wavelength for the metal is given by