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Explain about the term ultrasonics shortly.
The world ultrasonics applies to sound waves which vibrate at a frequency higher than the frequency which can be heard through the human ear or higher than around 20,000 hz. Sound is transmitted by one place to other by means of waves. The quality of any wave can be defined by identifying two associated properties: its frequency (f) or wavelength (lambda, λ). The unit utilized to measure the frequency of any wave is hertz. One hertz is described as the passage of a single wave per second.
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
I don''t understand how pressure energy arises
defination of multples and sub multiples
It is described as the nature of charge potential of charge potential is of two types: (i) Positive potential: with respect to positive charge. (ii)Negative potential: with r
"The pressure of a needed mass of gas at constant volume differs directly as its Kelvin Temperature",
Suppose that a nickel filter is required to produce an intensity ratio of Cu K a to Cu K ß of 100/1 in the filtered beam. Calculate the thickness of the filter and the transmission
A car of mass 800 kg is pulling a trailer of mass 300 kg up the slope of angle ? to the horizontal where sine ? = 1/200. Resistance to motion (apart from gravity) is 1.5 N per kg o
(i) A number system which has only two characters i.e. 0 (Low value) and 1 (High value) is known as binary system (ii) The electrical circuit which operates only in these two di
A ray of light is incident normally on an equilateral prism of refractive index 3/2 calculate devition. Ans) since the prism is equilateral therefore angle of prism is 60 0 =
Hard ferrites are used for making (A) Transformer cores. (B) Electrical machinery. (C) High frequency equipment. (D) Light weight permanent m
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