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-s , c -p , d-q
a-r , b-q , c -s , d-p
a-r , b-q , c -p , d-s
The reference standard used for measuremnet of physical quantity is called as_______________.
Quantity
Unit
Significant figure
Unit system
SI Unit of temp is__________________
J [ Joule }
F [ Farhenite ]
ºC [ Celcius ]
K [ Kelvin ]
Indium (In) Boron (B) and Aluminium (Al) are examples of
Trivalent
Divalent
Tetravalent
Pentavalent
In boyles law which of the followingt is constant
Pressure
Temperature
Volume
All of above
In N-type semiconductor Doping increases number as _______________
Electrons
Holes
Both of above
A trivalent impurity is called as _______________impurity
Acceptor
Exteinsic
Doner
Inteinsic
In Insulators energy gap between conduction band and energy band is________________________
Nearly 1 ev
Between 1ev and 5ev
Above 5 ev
None 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 0.01
40.300.02
40.30 0.04
40.30 0.08
100ºC will be___________when converted into forhentie
-273 F
373 F
212 F
273 F
32 F when converted into celcius will become_____________
273ºC
373ºC
100ºC
0ºC
The error occur due to faulty instrument is___________________
Human error
Random error
Instumental error
systematic error
1Volt is given by __________________________-
1J/1C
1A/1J
1C/1J
1A/1C
Electrons in atom are_______________changed
Positive
Negative
Neutal
Protons in atom are ______________________charged
Neutral
Cp is always_____________CV
Greater than
Half of
Smaller than
equal to
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
Steel
Glass
Copper
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 is bad conductor of heat
Glass is light in weight
Glass has good reflective porperty
Glass is good conductor of Heat