Can you explain the answer of this question below:Which of the followi...
Cathode Ray ExperimentCathode ray experiment is the experiment performed by JJ Thomson that led to the discovery of the electron. In the experiment, JJ Thomson took a tube made of glass containing two pieces of metal as an electrode. The air inside the chamber is subjected to high voltage and electricity flows through the air from the negative electrode to positive electrodeApparatus of the experiment The apparatus of the experiment incorporates a tube made of glass containing two pieces of metals at the opposite ends which act as an electrode. The two metal pieces are connected with an external voltage. The pressure of the gas inside the tube is lowered by evacuating the airProcedure of the experimentApparatus is set up by providing a high voltage source and evacuating the air to maintain the low pressure inside the tube.High voltage is passed to the two metal pieces so as to ionize air and make it a conductor of electricity.The electricity starts flowing as the circuit was complete.To identify the constituents of the ray produced by applying a high voltage to the tube, the dipole was set up as an add-on in the experiment.The positive pole and negative pole was kept on the either sides of the discharge ray.When the dipoles were applied, the ray was repelled by negative pole and it was deflected towards positive pole.This was further confirmed by placing phosphorescent substance at the end of discharge ray. It glows when hit by discharge ray. By carefully observing the places where fluorescence was observed, it was noted that the deflections were towards the positive side. So the constituents of the discharge tube were negatively charged.ConclusionThe characteristics of cathode rays (electrons) do not depend upon the material of electrodes and the nature of the gas present in the cathode ray tube.?
Can you explain the answer of this question below:Which of the followi...
Explanation:
Statement (D): Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube.
This statement is not correct about the characteristics of cathode rays. The characteristics of cathode rays actually depend on the nature of the electrodes in the cathode ray tube, not the gas present in the tube.
Characteristics of Cathode Rays:
Cathode rays are streams of electrons that are emitted from the cathode (negative electrode) in a cathode ray tube. They have several distinctive characteristics, which are as follows:
(i) They start from the cathode and move towards the anode.
Cathode rays are negatively charged particles (electrons) and are attracted towards the anode (positive electrode) in a cathode ray tube. Therefore, they start from the cathode and move towards the anode.
(ii) They travel in a straight line in the absence of an external electrical or magnetic field.
Cathode rays travel in straight lines in the absence of any external electrical or magnetic field. This was observed by J.J. Thomson during his experiments with cathode rays.
(iii) Characteristics of cathode rays do not depend upon the material of electrodes in the cathode ray tube.
This statement is incorrect. The characteristics of cathode rays do depend on the material of the electrodes in the cathode ray tube. The properties of the cathode, such as its work function and electron emission capability, can affect the characteristics of the cathode rays.
(iv) Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube.
This statement is also incorrect. The characteristics of cathode rays do not depend on the nature of the gas present in the cathode ray tube. The gas in the tube mainly serves to provide an environment for the generation and propagation of the cathode rays but does not significantly influence their characteristics.
Therefore, the correct answer to the question is (D) - "Characteristics of cathode rays depend upon the nature of gas present in the cathode ray tube," as this statement is not correct.
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