Dimension of Force
The reference standard used for measuremnet of physical quantity is called as_______________.
Quantity
Unit
Significant figure
Unit system
For which materials as the temperature increanes condutiwity decreases
Insulator
Semi-Conductor
None of abve
Conduetor
Silicon (Si) and Germanium (Ge) are _______________
Trivalent
Pentavalent
Tetavalent
Divalent
In N - Type Semiconductor mayjority carriers are______________--
Holes
Electrons
Both of above
None of above
Who are minority change Carriers is P-type semi-conductors
For semiconductor matereial as the temperature increases its conductivity____________________
Decreases
Increases
Remains Constant
Who are minority change Carriers is N-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____________
4%
2%
6%
8%
100ºC will be when converted into kelvin will become
212 K
373 K
-273 K
273 K
A Cup of tea kept on table losses its heat by______________process
Conduction
Convection
Radiation
All of above
How many significant figures are there in reading 5000 10
5
1
10
8
According to ohms law current is directly proprtional to______________________
Voltage
Resistance
Charge
Magnetic filed
Unlike charges________________each Other
Neither attract nor repel
Attract
Repet
According to coulombs law Force of attraction is directly propartional to____________________________
Mutipuication of Charges
Square root of distance between charges
Square of distances between charges
Distance between charges
Which mode of heat transfer takes place without actual migration of particiles
Conveection
Radiatiion
Which mode of heat transfer is slowest of all other models
Which of the follwoing material is bad wnductor of heat
Aluminium
Glass
Steel
Copper
Conduction is ___________than convection
Slower
Faster
Medium
There flask cused to keep liqued Hot or coll for long times has double walled glass vessel because
Glass is light in weight
Glass is bad conductor of heat
Glass is good conductor of Heat
Glass has good reflective porperty