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Illustrate the term semiconductor laser.
Semiconductor Laser (Laser diode):
It is a laser wherein semiconductors (characteristically direct band-gap semiconductors) can be utilized as small, highly effectual photon sources.
The most general semiconducting material which has been used in lasers is gallium arsenide (i.e., GaAs). An illustration of this semiconducting laser diode is demonstrated here.
Mach number (E. Mach): The ratio of the speed of an object in a provided medium to the speed of sound within that medium. Mach's principle (E. Mach; c. 1870) The inert
Microwave diathermy The microwave diathermy can be produced in special tube which can be placed several inches from the region to be treated . Microwave can penetrate deep int
In certain ranges of a piano keyboard, more than one string is tuned to the same note to provide extra loudness. For example, the note at 110 Hz has two strings at this frequency.
An isotope of iodine (Z = 53) is used to treat thyroid conditions. Its mass number is 131. How many neutrons are in its nucleus? 131 - 53 = 78 neutrons
A guitar string produces 4 beats/second when sounded with a250Hz tuning fork and 9 beats/second when sounded with a 255 Hz tuning fork. What is the vibration frequency?
Electric Motor: A device, which converts electric energy into mechanical energy is known as Electric Motor. Factors on which the speed of Rotation of Motor Depends: The
A string of cross section 2cm2 is doubled in length by the application of a longitudinal force 2*10 5 dynes. The youngs modulus is
An atom is said to be polarized if it possesses and effective dipole moment, that is, if there is a separation between the centres of negative and positive charge distribution. It
Stefan-Boltzmann constant; sigma (Stefan, L. Boltzmann) The constant of proportionality exist in the Stefan-Boltzmann law. It is equivalent to 5.6697 x 10 -8 W/m 2 /K 4 .
1. Turbulent blood flow in anaemic patients is not uncommon. What blood flow parameters should this turbulence be attributed to and why. 2. Using appropriate mathematical iden
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