Q3 of 22 Page 113

Match the entries of column I with the appropriate entries of column II and column III: (Double matching)

(i)- (b)- (A)

Reason- Types of charges present at the cathode rays are negative while at anode rays are positive. That is why they move in the opposite direction as they attract each other.


(ii)- (d)- (C)


Reason- Particles present at the cathode rays are electrons and the anode rays are protons.


(iii)- (a)- (B)


Reason- The properties of the cathode rays are independent of the nature of the gas taken in discharge tube while the properties are dependent upon the nature of the gas in the discharge tube.


(iv)- (c)-(D)


Reason- Origin of cathode rays is cathode end while for anode rays is anode end.


More from this chapter

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1

Based on the Thomson’s model of an atom, say which of the following statements are correct.

i) The positive charge is assumed to be uniformly distributed over the atom.


ii) The electrons are uniformly distributed in the positively charged sphere.


iii) The electrons attract each other to stabilize the atom.


iv) The mass of the atom is assumed to be uniformly distributed over the atom.


a) (i) ,(ii) and (iv) b) (i),(ii) and (iii) c) (i) and (iii)

 2

Fill in the blanks:

1. ______is a negatively charged particle. (Electron/Proton)


2. Proton is deflected towards the___ charged plate. (positively, negatively)

 4

Identify the wrong statement regarding the properties of cathode rays and correct it.

1. Cathode rays are made up of large particles with mass and kinetic energy.


2. Cathode rays are deflected by the magnetic field.


3. Cathode rays depend on the nature of the gas inside the tube.

 5

Why does a light paddle wheel placed in the path of cathode rays begin to rotate, when cathode rays fall on it?