The high voltage is applied to the ______ of magnetron  and it ejects number of electronics through ______. Select one:a. between anode and cathode of magnetron and it ejects number of protons through thermionic emission. b. magnetron plate and it ejects number of electrons through process of acceleration. c. Cathode of magnetron and it ejects number of electrons through thermionic emission.

n magnetron, a) each cavity pass on excitation to other cavity. b) adjacent cavities are 180 degrees phase apparat to each other. c) The magnetic field is controlled by RF input and it gives direction to movement of electrons from cathode to anode. d) If magnetic field is more than certain value then electrons will not move from cathode to anode but return to cathode again. Select one:i. a,b,c are correct d is wrongii. only a and d are correct. iii. all are correct statements. iv. a,b are correct c, d is wrongv. only a is correct

n electron microscope, electron gun and anode emit high _____ electron beam.

Electrons emitted from the cathode of a cathode ray tube are accelerated by a potentialdifference of 2.00 kV between the cathode and the anode. The electrons then enter the uniformelectric field between the middle of two parallel conducting plates, each of length 2.00 cm. ThePotential difference between the plates is 500 V and the plates are separated by a distance of1.50 cm.Calculate(a) the velocity 𝑢 of the electrons when they emerge from the anode.(b) the time taken for the electrons to transverse the uniform electric field.(c) the velocity of the electrons when they emerge from the uniform electric field.

Which of the following effects can be produced by electricity?i) Heating effectii) Magnetic effectiii) Chemical effectOptions:i onlyi and ii onlyi, ii and iiii and iii only

Magnetron applications found in a) Radarb) Microwave cookingc) Lighting (Sulphur lamp)d) Microwave generatorSelect one:i. Only a and b are correctii. only a,b,d are correct. iii. all are correct applications.iv. Only a, b, c are correct