10th Class Physics MCQS
The half life of radium 226 is
1600 year
1630 years
1620 years
1610 years
What type of graph is in between V and I, if metal obeys ohm’s law:
Parabola
Curved
None of these
Straight line
an ideal voltmeter is that which draws:
none of these
high current
no current
small current
isotopes are atom of same element with different.
Number of proton
Atomic mass
Atomic number
Number of electron
The half life of radium 226 is 1620 years. If N is its total amount then after the four half lives, its left amount will be:
1/8 N
1/2 N
1/4 N
1/16 N
The half life of carbon 14 is:
5730 years
5750 years
5740 years
5760 years
Which element is used to locate the ulcer in brain?
Iodine 131
Carbon 14
Potassium 40
Phosphorus-32
100×103 A= :
10 3 A
10-1A
10:00 AM
10 2 A
When a heavy nucleus splits into lighter nuclei,the process would.
absorb nuclear energy
Absorb Chemical Energy
Release Chemical energy
Release nuclear energy
Who discovered the phenomenon of natural radioactivity?
Perry
Rutherford
Merry Curi
Henry Becurial
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