Advertisements
Advertisements
प्रश्न
What happens if the negative potential is changed on a grid?
Advertisements
उत्तर
If the negative potential on the grid is changed, then the number of electrons reaching the anode and striking the screen changes which ultimately changes the brightness of the pattern of the screen.
APPEARS IN
संबंधित प्रश्न
Name the radiations which are absorbed by greenhouse gases in the earth’s atmosphere.
A radioactive substance is oxidized. Will there be any change in the nature its radioactivity? Give a reason for your answer
Why is a cathode ray tube evacuated to a low pressure?
Give one example of isobars.
In following fig. shows a mixed source S of alpha and beta particles in a thick lead container. The particles pass through a magnetic field in a direction perpendicular to the plane of paper (inwards as shown by x). State and show in the diagram how the particles get affected.
A radioactive source emits three types of radiations.
Name the radiation which has the highest ionizing power.
State two characteristics of the substance used as thermionic emitter.
From α, β and γ-rays, name the one which is not affected by electric or magnetic field?
What is the value of the speed of gamma radiations in air or vacuum?
