What is SI Unit of Temperature?
Farhenite (F)
Celcius (°C)
Kelvin (K)
Joule (J)
Which of the Following is NOT a fundamental quantity
Length
Amount of Substance
Mass
Weight
In___________ the valancy band and coduction band overlap each other
Conductors
Insulators
Semiconductors
None of above
The resisitivity as insulator is between____________________-
Arsenics (As), Antimony (Sh) and Phosphrous (P) are examples of
Pentavalent
Divalent
Trivalent
Tetravalent
In Insulators energy gap between conduction band and energy band is________________________
Nearly 1 ev
Between 1ev and 5ev
Above 5 ev
Who are minority change Carriers is N-type semi-conductors
Both of above
Holes
Electrons
A Pentawalent Impurity is called as____________impurity
Acceptor
Doner
Intrinsic
Exteinsic
Additian & measurement 12.241 cm, 4.51 cm & 4.0 cm in significant figure is_____________________
20.751
20.75
20.750
20.7
273.15 K when conveted into Forhenite will become___________________
32ºF
373ºF
100ºF
0ºF
The boiling Point of water in farfhenite scale is_______________
273ºF
212ºF
How many significant figures this rading has 0.784 cm
4 Significant Figures
3 Significant Figures
1 Significant Figures
2 Significant Figures
According to coulomb's loa and Force of attraction/repulsion is inversely proportional to________________________
Square of distances between charges
Square root of distance between charges
Mutipuication of Charges
Distance between charges
SI unit of electric field Intensity is_____________________
C/N
N/m
N/C
SI unit of magnetic Flux is ___________________________
Weber
Gauss
Tesla
Coulomb
The ratio CP/CV is______________________
Greater than 1
Equal to 0.5
Equal to 1
Less than 1
Which mode of heat transfer can take place even without a medium
Condultion
Convection
Raliation
None of abve
Which mode of heat transfer takes place without actual migration of particiles
Conduction
Conveection
Radiatiion
Which mode of heat transfer is fastest as all other modes
Radilation
There flask cused to keep liqued Hot or coll for long times has double walled glass vessel because
Glass has good reflective porperty
Glass is bad conductor of heat
Glass is light in weight
Glass is good conductor of Heat