Define cathode rays, Physics

Assignment Help:

Cathode rays, discovered by Sir Willium Crooke are the stream of electrons. They may be given by using a discharge tube containing gas at a low pressure of the order of 10-2 mm of Hg. At that pressure the gas particles ionize and the emitted electrons travel in the direction of positive potential of anode. The positive ions touch the cathode to make emission of electrons from cathode. These electrons also go in the direction of anode. Therefore the cathode waves in the discharge tube are the electrons given because of ionization of gas and that emitted by cathode because of collision of positive ions.

 


Related Discussions:- Define cathode rays

Illustrate how are amps and watts related, Q. Illustrate how are amps and w...

Q. Illustrate how are amps and watts related? Answer:- In a nutshell the power calculated in watts dissipated by a resistance is directly proportional to the square of the

In a plot of photoelectric current versus anode potential, In a plot of pho...

In a plot of photoelectric current versus anode potential, how does 1. The saturation current varies with anode potential for incident radiations of dissimilar frequencies but s

Describe critical angle, The measurements taken in Ramdesns eyepiece more w...

The measurements taken in Ramdesns eyepiece more worthy (reliable) than Huygens eyepiece. Why? Describe critical angle. show its relationship with refractive index.

Index of refraction to a medium, On transitory from a medium with one index...

On transitory from a medium with one index of refraction to a medium with a different index of refraction light is typically both reflected and refracted. Under some conditions how

Why, why sky is blue

why sky is blue

Calculate the value of forces for each test, An experiment was carried out ...

An experiment was carried out to measure forces acting in two members of a pin-jointed framework due to different applied loading conditions. Dial gages P and Q were calibrated and

Nps, NPS, NEQ, and DQE of X- Ray Detector 1. An Example of a determini...

NPS, NEQ, and DQE of X- Ray Detector 1. An Example of a deterministic blurring. The digital flat panel detectors use discrete pixels to collect scintillation light from the ph

Ripple tank, Ripple tank The concept of reflection and refractio...

Ripple tank The concept of reflection and refraction of light waves can be understood by the study of reflection and refraction of waves on water. The water waves travel

what is current?, A simple electric circuit, where current is represented ...

A simple electric circuit, where current is represented by the letter i. The relationship among the voltage (V), resistance (R), and current (I) is V=IR; this is called as Ohm''s L

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd