The process of electron emission from the surface of a metal into the – McqOptions

MCQOPTIONS

1.	The process of electron emission from the surface of a metal into the surrounding space by heating the material is known as:
A.	Secondary emission
B.	Thermionic emission
C.	Photo-electronic emission
D.	Field emission
Answer» C. Photo-electronic emission

Discussion

No Comment Found

Related MCQs

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by
If the volume of voids is equal to the volume of solids in a soil mass, then the values of porosity and voids ratio respectively are
Solve this binary problem: 01110010 – 01001000 =
Binary subtraction of a decimal 15 from 43 will utilize which two\'s complement?
An 8-bit register may provide storage for two\'s-complement codes within which decimal range?
An induction meter can handle current upto
In moment distribution method, the sum of distribution factors of all the members meeting at any joint is always
A father is twice as old as his son. 20 years ago, the age of the father was 12 times the age of the son. Find the present age of the son?
The ratio between the present ages of P and Q is 6 : 7. If Q is 4 years old than P, what will be the ratio of the ages of P and Q after 4 years ?
What is Fred’s age today, if he will be twice Sam’s age next year? Sam is 10 years old now?