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The length of a wire vibrating with a frequency of 340 Hz is 1m . It its length is changed to 1.6 m, determine the frequency. Name any two musical instruments whose working li
Q. The minimum wavelength of X-rays produced in a Coolidge tube is 0.05 nm. Find the operating voltage of the Coolidge tube. λmin = 12400 A 0 / V = 0.5 X 10 -10 m Theref
Q. Give one merit of a scanning electron microscope over a transmission electron microscope? Answer:- The SEM has turn into more popular than the TEM as it can produce ima
The total number of neutrons in dipositive zinc ions with mass number 70 is: (1) 34 (2) 40 (3) 36 (4) 38 Ans:40
A simple theodolite or astrolabe A simple theodolite or astrolabe is formed by fixing a drinking straw to the base line of a protractor with sealing wax or glue. A plumb line h
Find the electric field between the plates of a capacitor given the following:? (1) C= 10pF (2) the capacitor is connected to a 25 V battery (3) there is a vacuum between the capa
According to uncertainity stationary orbits are accepted or not?please give reason Ans) According to uncertainity stationary orbits are not accepted because according to station
What are the demerits of the typical ultrasonic flaw detector? Demerits of a typical ultrasonic flaw detector: a. Both the sides of the specimen are needed for the study.
As a longitudinal wave moves through a medium, the particles of the medium: a) vibrate in a path parallel to the path of the wave b) vibrate in a path perpendicular to the p
On the basis of mutual interactions or behavior of several materials in an external magnetic field, the materials are dividing in three basic categories. (i) Diamagnetic materi
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