Why e m ratio of anode rays is constant?

Why e m ratio of anode rays is constant?

This is because cathode rays consist of electrons. The e/m ratio does not depend on the type of gas filled in the discharge tube. For only the cathode rays, the constituent particle always remains the same that is why the ratio is the same.

What is the e by m ratio of cathode rays?

The e/m ratio for cathode rays is constant. It is equal to 1. 76×108C/g. It is independent of the nature of gas in discharge tube and nature of cathode or electrodes of tube.

Why e m ratio of anode rays is different for different gases?

Anode rays are produced by the ionisation of gas molecules that are filled in the tube. Therefore e/m depends only on the gas filled in the tube. So option (a) is correct.

Does em value of anode rays depend on?

The e/m value of positive particles (anode rays) depends on the gas taken in the discharge tube.

Why is e m ratio important?

The measuring the e/m ratio of an electron was very important so physics could gain a better understanding of this particle. The measuring the e/m ratio of an electron was very important to physics at the beginning of the 1900s. It allowed scientists to gain a better understanding of this newly discovered particle.

What is e m ratio?

em value for electron is the ratio of charge on an electron to its mass. Charge on an electron = 1.602 × 10−19 C. Mass of an electron = 9.109 × 10−31 Kg. Therefore, em = 1.602× 10−19C9.109×10−31Kg.

What is the ratio of cathode and anode?

Cathode to anode recommendations: A ratio of 1:10 is often used. Type II: Make the cathode about ½ the max anode surface area: 1:2, cathode to anode. Type III: Make the cathode between ¾ – 1 times the max anode area, about 1:1.3, up to 1:1.

What is the e by m ratio of?

e/m = 1.758820 × 1011 C/kg Where, m = mass of an electron in kg = 9.10938356 × 10-31 kilograms. e = magnitude of the charge of an electron in coulombs = 1.602 x 10-19 coulombs.

Which has highest e m value?

Thus if q is perpendicular, ti experiences force and follows parabolic path and largest derivation of D is seen,thus me is max.

Which of the following gas has highest e m of anode rays?

The highest value of e/m of anode rays has been observed when the discharge tube is filled with hydrogen. Anode rays consists of positively charged ions obtained by removal of one or more electrons from neutral gaseous atom. Among the given gases, hydrogen has least mass. Hence, it has maximum value of e/m.

Why e/m value of cathode rays is same for all gases?

The cathode rays consist of only electrons. Thus their e/m value does not change with change of gas. Hence e/m value does not vary with nature of gas.

Which has the highest e m ratio he2+ H+ He+ D+?

Answer: The correct answer is Option 3.

Does anode have higher electric potential?

At anode the oxidation results in the transfer of electrons to the electrode. The anode, therefore, acqui a negative charge that corresponds to a low potential. The anode is thus a negative electrode and cathode a posi electrode.

What are the two properties of anode rays?

• All of these.
• Following are the properties of anode rays:
• 1) Anode rays deflect towards negatively charged plate.
• 2) Anode rays travel along a straight path in absence of electric and magnetic field.
• 3) Anode rays are positively charged radiations due to positive charged sub-atomic particles.

What are the four properties of anode rays?

Properties of Anode Rays

• Anode rays are always moving in a straight direction.
• These rays are made up of ions or particles.
• Magnetic and electric fields deflect these rays.
• When deflected, they travel towards negative late so they are positive.
• Anode rays lead to mechanical motion.

Which has lowest Em ratio?

So the alpha particle has the least E/M because of its large mass. You can see that its E/M is equal to 1/2 time E/M of a proton. Neutron has no charge.

What is the value of em?

=1. 759×1011kgc. Was this answer helpful?

Who found e m ratio?

J.J Thomson was the first scientist who measured charge to mass ratio(e/m) of an electron.

Why e m ratio of cathode rays is constant?

The cathode rays have constant charge to mass ratio (e/m). This is because the nature of cathode rays does not depend upon the gas filled in the discharge tube, rather cathode rays are emitted by the cathode in the tube.

Why does e m ratio of negatively charged particles remain constant for all gases?

The negaively charged particles are electrons. The mass and charge of an electron is same irrespective of the substance (element or compound) it is generated. Hence, e/m or chargeto mass ratio is constant and independent of the type of gas.

Why is the EM ratio of a proton not constant?

Why e/m ratio of proton varies ? (It should be same because mass and charge on proton is same in all so charge by mass ratio should not vary. Q. A proton of a mass m and charge +e is moving in a circular orbit of a magnetic field with energy 1 MeV.

Why is the charge to mass ratio of cathode rays same?

The charge-to-mass ratio for the cathode rays is always the same because they consist of negatively charged electrons.