Select the correct option of Fundamental quantites with SI units
a-iv , b-iii , C-ii , d-i
a-ii , b-i , c-iv , d-iii
a-iii , b-i , C-iv , d-ii
a-ii , b-iv , c-i , d-iii
Dimension of Work
Chose the including material__________
Copper
Mica
Germanium
Silicon
In condutors the valancy band and Conduetion band__________________
Have small gap
have huge gap
overlap each other
None of above
For Conductors as the teperators increases conductivity____________________
Increases
Decreases
Does not change
In Insulators energy gap between conduction band and energy band is________________________
Nearly 1 ev
Between 1ev and 5ev
Above 5 ev
The electrical prperties of material depends upon number of elctrons in______________________
Innermost orbit
Outermost Orbit
Both of above
Who are minority change Carriers is P-type semi-conductors
Holes
Electrons
Temp scales dgree celsius (ºC) and Kelvin are related by
ºC + 273 = K
ºC = K + 273
ºC = K / 273
ºC - 273 = K
The Boiling point of water in Kelvin scale of temperature is _______________
100 K
373 K
212 K
273 K
32 F when converted into celcius will become_____________
373ºC
0ºC
273ºC
100ºC
How many Significant Figures this reading has 19700
4
2
5
3
According to coulombs law Force of attraction is directly propartional to____________________________
Mutipuication of Charges
Square of distances between charges
Distance between charges
Square root of distance between charges
Factors on which resistance of certain material depends
Length
Area
Temp
All of above
Protons in atom are ______________________charged
Positive
Negative
Neutral
Cp is always_____________CV
Half of
equal to
Greater than
Smaller than
Which mode of heat transfer takes place without actual migration of particiles
Conduction
Conveection
Radiatiion
Which of the follwoing material is bad wnductor of heat
Glass
Steel
Aluminium
Which mode of heat transfer is slowest of all other models
Convection
Radiation
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