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Free Online Mock Physics Multiple Choice Test on Atomic Nuclearphysics

Sub Category : Atomic Nuclearphysics

Test : 1

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1)	The ratio of minmum to maximum wavelengths in Balmer series is (1) 5:9 (2) 5:36 (3) 1:4 (4) 3:4
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2)	What fraction of radioactive material will get disintegrated in a period of two half-lives? (1) Three-fourth (2) Half (3) One-fourth (4) Whole
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3)	The activity of a radioactive sample is 1.6 curie. Its half-life is 2.5 days. Its activity after 10 days will be (1) 0.1 curie (2) 0.8 curie (3) 0.4 curie (4) 0.16 curie
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4)	In a mean life of a radioactive sample (1) About 2/3 of the substance disintegrates (2) About 1/3 of the substance disintegrates (3) About 90% of the substance disintegrates (4) Almost whole of the substance disintegrates
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5)
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