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Free Online Mock Physics Multiple Choice Test on Atomic Nuclearphysics
Sub Category : Atomic Nuclearphysics Test : 3 Time Left :
1) In the Bohrs hydrogen atom model, the radius of the stationary orbit is directly proportional to (n = principal quantum number) (1) n (2) n2 (3) n-1 (4) n-2
  1 2 3 4
2) If in nature there may not be an element for which the principle quantum number n greater than 4, the total possible number of elements will be (1) 64 (2) 60 (3) 32 (4) 4
  1 2 3 4
3)The relation between the half life T of a radioactive sample and its mean life t is
(1) t = 0.693 T (2) T = 0.693 t (3) t = T (4) t = 2.718 T
1 2 3 4
4) If T is half life of radioactive material, the fraction that would remain after a time T/2 is(1) 1/2 (2) 1/route of 2 (3) 3/4 (4)route of 2-1/route of 2
1 2 3 4
5)The more readily fissionable isotope of uranium has an atomic mass of
(1) 238 (2) 235 (3) 236 (4) 234
1 2 3 4
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