Show that when two in-phase linearly polarised light waves are superposed, the resultant wave has fixed orientation as well as amplitude. Depict the orientation of electric field vector of the resultant wave in the reference plane.
See Answer →The fundamental frequency of a string instrument is 580 Hz. (i) Calculate the frequency of the first and third harmonics generated on it. (ii) If the tension in the string is doubled, calculate the new fundamental frequency.
See Answer →Obtain an expression for energy transported by a progressive wave on a taut string. Also show that the power transported by the wave is proportional to the wave velocity.
See Answer →Use the uncertainty principle to estimate the approximate size of an atom.
See Answer →Determine the wavelengths of a photon and an electron having energy 5.0 x 103 eV and 5.5 x 103 eV respectively. Which of these would you use to probe atomic structures?
See Answer →Light of frequency Hz is incident on a metal surface. Electrons with a maximum speed of
are ejected from the surface. Calculate the work function and the cut-off frequency.
Derive the relativistic energy - momentum relation for a free particle.
See Answer →Calculate the relativistic mass and the rest mass of a negatively charged particle which has linear momentum of magnitude 1.80 x 10-21 kgms-1 at a speed of 0.9 c.
See Answer →Two spaceships of proper length L0 approach the earth from opposite direction at velocities 0.7c . What is the length of one of the spaceships with respect to the other?
See Answer →Calculate the linear momentum, total energy (in MeV) and kinetic energy (in MeV) of a particle travelling at 0.5 c, given that its rest mass is 938 MeV.
See Answer →Light takes 5.2 years to travel from a distant planet to earth. If the astronaut travelled from earth to that planet at a speed of 0.8 c, how long would it take according to the astronaut’s clock, to reach the planet?
See Answer →External Layout of the office (Location and connectivity of the Office)
See Answer →Internal layout of the office (office equipment)
See Answer →Equipment’s of Mailing Rooms.
See Answer →Computer
See Answer →Office Security System
See Answer →FAX
See Answer →What do you understand by Electronics form? Discuss briefly the technologies used in Enterprise form Automation
See Answer →Explain provisions of work facilities to the office works and its purposes.
See Answer →Importance of Indexing
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