Question

Choose the correct answer;
Properties of anode rays:
(a) Travel in straight lines: They cast a shadow of the objects placed in their way.
(b) Produce mechanical effect: A paddle when placed in their path starts rotating.
(c) Rays are positively charged: Anode rays deflected by the negative plate of an electric field.
(d) All the above.

Answer 1

Hint: Anode rays are the rays of ionised gaseous atoms , which is formed by applying high electric potential on gaseous mixture in the discharge tube thus we can say anode rays is made up of positively charged ionised gaseous ions.

Step by step Solution:
Anode rays is a beam of positive ions that is created by ionization of gas in discharge tubes.
Since they are positive ions they can be deflected towards the negative electric plate of an electric field.
These are also known as Canal rays. These rays are material particles which travel in a straight line. They can be deflected by external magnetic fields and they also affect the photographic plate. They travel in a straight line ,and can cast the shadow of the object placed in their way. They also produce mechanical effects. These are some of the properties of the anode says.
From the given option (a),(b) and (c) are all the properties of the anode rays.
Hence option D is correct.

Note: In the discharge tube experiment we can find the properties of anode rays and cathode rays which further results in discovery of proton, electron and neutron which are the subatomic particles of an atom.