Select Correct option of Qty & Unit
Qty Unit
a) Mass P) K
b) Electric Current q) A
c) Luminious Intensity r) Kg
d) Temp s) Cd
a-r , b-q , c -p , d-s
a-r , b-s , c -p , d-q
a-r , b-q , c -s , d-p
Dimension of Pressure
In______________,there is very big gap between conduction band and valancy band
Conductors
Insulators
Semiwnduetors
None of above
In Charles law which of the following is constant
Pressure
Temperature
Volume
All of above
Silicon (Si) and Germanium (Ge) are _______________
Trivalent
Divalent
Pentavalent
Tetavalent
A trivalent impurity is called as _______________impurity
Exteinsic
Inteinsic
Acceptor
Doner
In P-type Semi-conductor,Doping increases number of_________________
Both notes and electrons
Holes
Electrons
The electrical prperties of material depends upon number of elctrons in______________________
Innermost orbit
Outermost Orbit
Both of above
If length of a component is 20.15 0.02, If two such component are joined together what will be total length
40.30 0.08
40.300.02
40.30 0.04
40.30 0.01
A Cup of tea kept on table losses its heat by______________process
Conduction
Convection
Radiation
100ºC will be when converted into kelvin will become
373 K
-273 K
212 K
273 K
A Good Unit should be,
Universoly accepted
Well defined
Invasiable from place to place
All of the above
Factors on which resistance of certain material depends
Length
Area
Temp
According to coulombs law Force of attraction is directly propartional to____________________________
Square root of distance between charges
Square of distances between charges
Distance between charges
Mutipuication of Charges
SI unit of electric field Intensity_____________________
N/C
V/m
Which mode of heat transfer is slowest of all other models
Which mode of heat transfer is fastest as all other modes
Radilation
The ratio CP/CV is______________________
Greater than 1
Less than 1
Equal to 0.5
Equal to 1
Cp is always_____________CV
Greater than
Smaller than
equal to
Half of
There flask cused to keep liqued Hot or coll for long times has double walled glass vessel because
Glass is good conductor of Heat
Glass has good reflective porperty
Glass is bad conductor of heat
Glass is light in weight