Home
Class 11
CHEMISTRY
Assertion. Cathode rays originate from t...

Assertion. Cathode rays originate from the cathode and move towards andoe.
Reason. Electrons present in the material of the cathode are continuously emitted on applying high voltage

A

If both assertion and reason are true, and reason is the true explanation of the assertion

B

If both assertion and reason are true, but reason is not the true explanation of the assertion

C

If assertion is true, but reason is false

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
D

Correct A. Cathode rays do not originate from cathode but are produced by the knock out of electrons of the atoms of the gas present in the discharge tube.
Correct R. Electrons are continuously produced from the atoms of the gas present in the discharge tube.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • STRUCTURE OF ATOM

    PRADEEP|Exercise Competition Focus (JEE (Main and Advanced)/Medical Entrance (IX. Assertion And Reason Type Questions (Type I))|5 Videos
  • STATES OF MATTER: SOLID MATTER

    PRADEEP|Exercise COMPETITION FOCUS (ASSERTION-REASON)|17 Videos
  • THERMODYNAMICS

    PRADEEP|Exercise MULTIPLE CHOICE QUESTION ( BASED ON PRACTICAL CHEMISTRY)|3 Videos

Similar Questions

Explore conceptually related problems

Assertion : The characteristics of cathode rays do not depend upon the material of electrodes and the nature of the gas present in the cathode ray tube. Reason : Cathode rays consist of negatively charged particles, called electrons.

Assertion : Cathode rays travel in straight lines. Reason : Cathode rays do not penetrate through thin sheets.

Knowledge Check

  • Cathode rays move towards

    A
    Positively charged cathode
    B
    Positively charged anode
    C
    Negatively charged cathode
    D
    Negatively charged anode
  • Cathode rays get deflected in an electric field towards

    A
    positive Plat
    B
    negative plate
    C
    no deflection takes place
    D
    both (b) and (c) are correct
  • Kinetic energy of emited cathode rays is dependent on

    A
    only voltage
    B
    only work function
    C
    both (a) and (b)
    D
    it does not depend upon any physical quantity
  • Similar Questions

    Explore conceptually related problems

    Which rays are originated when cathode rays strikes on hard metal surface?

    Cathode rays are made up of electrons . A node rays are made up of

    if the cathode and the anode are kept at the same potential, the emitted electrons have

    DNA in a get move from cathode to anode due to the presence of

    Assertion : Cathode rays do not travel in straight lines. Reason : Cathode rays penetrate through thick sheets.