Which of the following is a derived quantity
Weight
Electric Current
Luminious Intensity
Mass
Dimenstion of Energy__________________
In boyles law which of the followingt is constant
Pressure
Temperature
Volume
All of above
The gas has _______________Speafic heat (s)
Three
Two
Unlimited
One
The resisitivity as insulator is between____________________-
None of above
In Insulators energy gap between conduction band and energy band is________________________
Nearly 1 ev
Between 1ev and 5ev
Above 5 ev
A Pentawalent Impurity is called as____________impurity
Doner
Acceptor
Intrinsic
Exteinsic
Who are minority change Carriers is N-type semi-conductors
Holes
Both of above
Electrons
Is x = b/c where the percentage error in a,b,&C are 2% , 3% and 5% respectively Total percentage error in x will be_____________________
10%
24%
2.4%
12%
The Process by which heat reaches from surp to earth is
Convection
Radiation
Conduction
100ºC will be when converted into kelvin will become
273 K
-273 K
212 K
373 K
How many significant figures are there in reading 5000 10
10
8
5
1
The space surround a point charges where the effect of attraction/repuision is experienced is called________________________
Attraction field
Magntic field
Electric field
Charge field
SI unit of electric field Intensity_____________________
N/C
V/m
1Volt is given by __________________________-
1A/1J
1A/1C
1C/1J
1J/1C
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
Conduction is ___________than convection
Slower
Faster
Medium
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 good conductor of Heat
Glass has good reflective porperty
Glass is bad conductor of heat
Glass is light in weight