Which is SI unit of Luminous Intensity?
Candella
decibel
Bright
Lux
Which of the Following is NOT a fundamental quantity
Mass
Length
Weight
Amount of Substance
In boyles law which of the followingt is constant
Pressure
Temperature
Volume
All of above
In condutors the valancy band and Conduetion band__________________
Have small gap
have huge gap
overlap each other
None of above
Which of the following is NOT an insulator
Copper
Wood
Mica
Rubber
When Antimony (As) is added to Pure silicon (Si) we get__________SemiCondutor
N-type
P-type
A Pentawalent Impurity is called as____________impurity
Acceptor
Doner
Intrinsic
Exteinsic
For semiconductor matereial as the temperature increases its conductivity____________________
Increases
Decreases
Remains Constant
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____________
8%
4%
6%
2%
273.15 K when converted into desree celcius will become________________
32ºC
273ºC
100ºC
0ºC
The Boiling point of water in Kelvin scale of temperature is _______________
100 K
373 K
212 K
273 K
Which of the following number has significant figure 4
0.001
2.021
0.020
0.300
Electrons in atom are_______________changed
Positive
Negative
Neutal
Potential of Earth is Considered as____________________________
Zero
100 Millions
In finity
SI unit of Electric resistancfe is _________________________
Coulombs
Volts
Ohm
Ampere
Which mode of heat transfer takes place without actual migration of particiles
Conduction
Conveection
Radiatiion
The ratio CP/CV is______________________
Less than 1
Equal to 1
Greater than 1
Equal to 0.5
Which mode of heat transfer is fastest as all other modes
Convection
Radilation
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 has good reflective porperty
Glass is good conductor of Heat
Glass is light in weight
Glass is bad conductor of heat