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D- Ultrasonic wave Heating
These waves are different from electromagnetic waves . It produces mechanical vibration inside tissue. It is the same as the sound waves but it has much higher frequencies about I MHz with power of several watts per centimeter. It can move the tissue particles backward and forward with high frequency, in doing so it can increase the kinetic energy consequently it heats the tissue.
Ultrasound can be produced by special transducers placed in direct contact with the skin. It is used for relieving tightness and scarring occurring in jointdisease. It can dispose more heat in bones, as bones are better absorber for ultrasonic energy than soft tissue. It is also used in deep therapy.
Schroedinger's cat (E. Schroedinger; 1935): A thought experiment designed to revel the counterintuitive & strange notions of reality that come along quantum mechanics. A ca
UV radiations and X - rays are: UV radiations are produced by the high energy transitions of the electrons in atoms. UV radiations have wavelengths ranging from 0.4 m m to 1n
explain compound microscope
The heating elements of electric irons are made of (A) Copper. (B) Nichrome. (C) Constantan. (D) Aluminium. Ans: The heating components of electric irons ar
Distinguish between absolute permeability and relative permeability of a medium Absolute Permeability: 1. Absolute permeability is the ability of the medium to allow th
Micrometer Simulation A Micrometer is used to measure the external dimensions of objects that are 3 cm or smaller, this provides precise measurements to inside 0.01 mm. The
Q. For particles that have mass such like electrons quantum theory gives the relationship of wavelength to momentum by which of the following formulas, where h is Plancks constant,
describe the principle, construction and working of Michelson Interferometer.
Neutron possesses: (1)Positive charge (2)Negative charge (3)No charge (4)All are correct Ans: (3)No charge
a. A certain radioactive material emits gamma rays with energy 1 MeV. Another sample of radioactive material emits gamma rays with energy 10 keV. If both of these emit the same amo
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