10th Class Physics MCQS
Which element is used for the monitoring of thyroid glands?
Potassium 40
Iodine- 131
Carbon 14
Phosphorus 32
Radioactive isotopes present in atmosphere is
Ph 32
Cobalt 60
Carbon -14
Carbon 20
The half life of plutonium 236Pu94 is:
2.35 years
2.00 years
2.79 years
2.85 years
When a heavy nucleus splits into, lighter nuclei, the process would .
Release nuclear energy
Absorb nuclear energy
Release chemical energy
Absorb chemical energy
The number of neutrons in the nucleus of tritium is:
1
3
4
2
The symbol of alpha particles is:
00Y
0 1B
4AHe
42He
the resistance of conductor is inversely to:
pressure
temperature
area of cross section
length
As the temperature of a conductor rises, its resistance:
Increases
Does not change
Decreases
None of these
The unit of electric power is:
Coulomb
Watt
Volt
Joule
The half of carbon 14 is
5750 years
5730 years
5740 years
5720 years