The purpose of cathode in cathode ray tube is ______
A
To emit the electrons
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
To absorb the electrons
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
To deflect the electrons
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
To emit the protons
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is ATo emit the electrons The heated filament transfers its heat to the cathode the cathode coated by oxides of Barium or Strantium emit electrons on heating.