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Free Online Mock Physics Multiple Choice Test on Atomic Nuclearphysics
Sub Category : Atomic Nuclearphysics Test : 5 Time Left :
1)The Pfund series of hydrogen spectrum lies in the region
(1) Infrared (2) Visible (3) Ultraviolet (4) X-ray
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2) The size of nucleus is of the order of (1) 10-10 cm (2) 10-10 m (3) 10-15 cm (4) 10-15 cm
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3) The half life of Bi210 is 5 days. In the seven samples out of eight, the time required for decay is(1) 3.4 days (2) 10 days (3) 15 days (4) 20 days
1 2 3 4
4) Which one of the series of hydrogen spectrum is in the visible region?
(1) lyman series (2) Paschen series (3) Balmer series (4) Brackett series
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5) The decay constant of radium is 4.28 Ã- 10-4 per year. Its half life would be(1) 2000 year (2) 1240 year (3) 1620 year (4) 63 year
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