What is the nature of particle constituting positive rays
Answers
Answer:
The positive rays originating from the anode consist of positive ions. The mass of these ions depend upon the gas used in discharge tube.
Properties of Positive Rays :
(i) These are positive ions having same mass if the experimental gas does not have isotopes. However if the gas has isotopes then positive rays are group of positive ions having different masses.
(ii) They travel in straight lines and cast shadows of objects placed in their path. But the speed of the positive rays is much smaller than that of cathode rays.
(iii) They are deflected by electric and magnetic fields but the deflections are small as compared to that of cathode rays.
(iv) They show a spectrum of velocities. Different positive ions move with different velocities.
(v) q/m ratio of these rays depends on the nature of the gas in the tube (while in case of the cathode rays q/m is constant and does not depend on the gas in the tube).
(vi) They carry energy and momentum.
(vii) They cause ionization (which is much more than that produced by cathode rays).
(viii) They cause fluorescence (in ZnS or CdS screen) and affect photographic plates.
(ix) They have a little penetration power (but much less in comparison to cathode rays).
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