Atomic Nucleus|. Practice MCQs Physics for Mdcat By Engr. Kamran Soomro | mosaicbro.com

Atomic Nucleus|. Practice MCQs Physics for Mdcat By Engr. Kamran Soomro

7 of 114 questions (Page 9 of 17)

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57 The source of energy in the sun and the stars is mainly due to:
Correct Answer: B
Explanation: Stars generate energy via hydrogen fusion into helium.
58 Hydrogen bomb is an example of:
Correct Answer: B
Explanation: Hydrogen bombs use fusion (deuterium-tritium reactions) for explosive energy.
59 The example of fusion reaction is:
Correct Answer: C
Explanation: Solar fusion converts hydrogen into helium, releasing energy.
60 Materials can be identified by measuring their:
Correct Answer: D
Explanation: Radioactive isotopes are identified by their unique half-lives.
61 Radioactivity:
Correct Answer: C
Explanation: Radioactivity is an intrinsic property of unstable atomic nuclei.
62 In 1819, J. J. Thomson performed famous experiment relating to the passage of electric current through:
Correct Answer: C
Explanation: Thomson's cathode ray experiments involved low-pressure gases.
63 The charge on the electron was successfully determined by:
Correct Answer: B
Explanation: Millikan's oil-drop experiment (1909) measured the electron's charge.
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