Dimension of Density
The Property of an object that can be measured with a measuring instruments is known as______________.
Physical Unit
Physical attribute
Physical system
Physical quantity
Chose the including material__________
Germanium
Silicon
Copper
Mica
Which of the following is trivalent impurity ____________
Arsenis (As)
Antimony (Sb)
Boron (B)
Germanium (Ge)
In___________ the valancy band and coduction band overlap each other
Conductors
Insulators
Semiconductors
None of above
Who are minority change Carriers is N-type semi-conductors
Holes
Both of above
Electrons
In N-type semiconductor Doping increases number as _______________
Who are minority change Carriers is P-type semi-conductors
In his low resistance is given by R = V/I error in Voltage measurement is 4% The error in current measurement is 2% The error in resistance measurement will be____________
6%
2%
8%
4%
The Process by which heat reaches from surp to earth is
Conduction
Radiation
Convection
100ºC will be___________when converted into forhentie
273 F
212 F
373 F
-273 F
A Good Unit should be,
Universoly accepted
Well defined
Invasiable from place to place
All of the above
Protons in atom are ______________________charged
Positive
Negative
Neutral
Electrons in atom are_______________changed
Neutal
Nutrom are electrically ___________parchles
Neurtral
Which mode of heat transfer is fastest as all other modes
Radilation
Which mode of heat transfer takes place without actual migration of particiles
Conveection
Radiatiion
The ratio CP/CV is______________________
Greater than 1
Less than 1
Equal to 1
Equal to 0.5
Which mode of heat transfer can take place even without a medium
Condultion
Raliation
None of abve
There flask cused to keep liqued Hot or coll for long times has double walled glass vessel because
Glass is bad conductor of heat
Glass has good reflective porperty
Glass is light in weight
Glass is good conductor of Heat