How many fundamental quantities are there in SI Units system?
Five
Six
Three
Seven
Which of the Following is NOT a fundamental quantity
Mass
Amount of Substance
Length
Weight
In______________,there is very big gap between conduction band and valancy band
Conductors
Insulators
Semiwnduetors
None of above
In___________ the valancy band and coduction band overlap each other
Semiconductors
There is no Forbidden energy gap in__________Material
Conductor
Insulator
Semi conductor
None of Above
In Insulators energy gap between conduction band and energy band is________________________
Nearly 1 ev
Between 1ev and 5ev
Above 5 ev
In Conductors there is _________________ gap between valance band and conduction band
Large
Small
Very Large
No
A Pentawalent Impurity is called as____________impurity
Intrinsic
Exteinsic
Acceptor
Doner
The Length of rectangle is 1.25 cn and width is 3.354cm The area of rectange in significant figures with be____________
4.19
4.1
4.192
4.1925
32 F when converted into celcius will become_____________
0ºC
373ºC
273ºC
100ºC
A Cup of tea kept on table losses its heat by______________process
Conduction
Convection
Radiation
All of above
How many Significant Figures this reading has 19700
3
4
5
2
Nutrom are electrically ___________parchles
Positive
Negative
Neurtral
1Volt is given by __________________________-
1J/1C
1A/1C
1A/1J
1C/1J
When resistences are connected in parallel ____________ is same
Current
Voltage
Charge
Which mode of heat transfer is fastest as all other modes
Radilation
Cp is always_____________CV
Greater than
Smaller than
Half of
equal to
Conduction is ___________than convection
Faster
Slower
Medium
Which mode of heat transfer takes place without actual migration of particiles
Conveection
Radiatiion
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 light in weight
Glass is bad conductor of heat
Glass is good conductor of Heat