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Monday, 20 April 2026
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Physics Past Questions and Answers

Topic: Distinction between distance and displacement

Jamb Physics Questions - Distinction between distance and displacement

Question 6:
In a thermonuclear reaction, the total initial mass is 5.02 x \(10^{-{2}{7}}\)kg and the total final mass is 5.01 x \(10^{-{2}{7}}\)kg. The energy released in the process is
[c = 3.0 x \(10^8\) ms-1]
  • A 9.0 x 10<sup style='font-size: smaller;'>-13</sup>J
  • B 9.0 x 10<sup style='font-size: smaller;'>-12</sup>J
  • C 9.0 x 10<sup style='font-size: smaller;'>-11</sup>J
  • D 9.0 x 10<sup style='font-size: smaller;'>-10</sup>J
View Answer & Explanation
Question 7:
The major difference between a pure semiconductor and a pure metal is that
  • A Metals are harder than semiconductor
  • B While resistance of metals decrease with temperature , the reverse is the case for semiconductor
  • C The resistance of metals increases with temperature, while for semiconductors, it is the reverse
  • D Metals have forbidden gaps while semiconductors have not
View Answer & Explanation
Question 8:
The difference between X-rays and gamma rays is that
  • A X-rays are more penetrating than gamma rays
  • B X-rays are electromagnetic radiations while gamma rays are negatively charged radiation
  • C X-rays have higher frequencies than gamma rays
  • D X-rays arise from energy changes in the electronic structure of atoms while gamma rays come from the nucleus
View Answer & Explanation
Question 9:
The bond between silicon and germanium is
  • A Covalent
  • B Ionic
  • C Dative
  • D Electrovalent
View Answer & Explanation
Question 10:
In a thermonuclear reaction, the total initial mass is 5.02 x \(10^{-{2}{7}}\)kg and the total final mass is 5.01 x \(10^{-{2}{7}}\)kg. The energy released in the process is
[c = 3.0 x \(10^8\) ms-1]
  • A 9.0 x 10<sup style='font-size: smaller;'>-13</sup>J
  • B 9.0 x 10<sup style='font-size: smaller;'>-12</sup>J
  • C 9.0 x 10<sup style='font-size: smaller;'>-11</sup>J
  • D 9.0 x 10<sup style='font-size: smaller;'>-10</sup>J
View Answer & Explanation