Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 491: When the tension in a sonometer wire is doubled, the ratio of the new frequency to the initial frequency is Options:
  A) $\frac{1}{\sqrt{2}}$
  B) $\frac{1}{2}$
  C) $\sqrt{2}$
  D) 2
  Show Answer
  The correct answer is C .
• Question 492:

  The angular dispersion of a prism depends on

  Options:
  A) The index of refraction only
  B) The angle of incidence as well as the index of refraction
  C) The angle of incidence only
  D) The thickness of the prism only
  Show Answer
  The correct answer is A .
• Question 493: In a certain fusion reaction, a deuteron (${}_1^{2}H$) interacts with a triton (${}_1^{3}He$) and produces an a-particle (${}_2^{4}He$) and a second product. The second product is Options:
  A) a proton
  B) an electron
  C) a neutron
  D) a gamma ray
  Show Answer
  The correct answer is C .
• Question 494:

  

  In the above fig, PQ and R are vectors, which of the following options, gives a correct relationship between the vectors

  Options:
  A) P = Q + R
  B) P = Q - R
  C) P = R - Q
  D) P + Q + R = O
  Show Answer
  The correct answer is A .
• Question 495: The principle of transmissibility of pressure in a fluid at rest in all directions is known as Options:
  A) Archimede's principle
  B) Flotation Principle
  C) Newton's lwa
  D) Pascal's law
  E) Boyle's law
  Show Answer
  The correct answer is D .
• Question 496: A ball is thrown vertically into the air with an initial velocity u. What is the greatest height reached? Options:
  A) u2g
  B) $\frac{3u^2}{2g}$
  C) $\frac{u^2}{g}$
  D) $\frac{u^2}{2g}$
  Show Answer
  The correct answer is D .
• Question 497:

  

  The value of T in the figure above is

  Options:
  A) 10.0N
  B) 11.8N
  C) 20.0N
  D) 40.0N
  Show Answer
  The correct answer is C .
• Question 498: Natural radioactivity is the random spontaneous disintegration of the nuclei of heavy isotopes of certain elements with the emission of Options:
  A) $\alpha$, X, and $\beta$
  B) $\alpha$, $\beta$ and $\gamma$-rays
  C) X, $\alpha$, $\gamma$-ray
  D) $\alpha$, $\beta$ and X-rays
  Show Answer
  The correct answer is B .
• Question 499: The external and internal diameter of a tube are measured as (32 ± 2)mm and (21 ± 1)mm respectively. Determine the percentage error in the thickness of the tube. Options:
  A) 27%
  B) 14%
  C) 9%
  D) 3%
  Show Answer
  The correct answer is C .
• Question 500:

  If the stress on a wire is 10${}^7$NM${}^{-2}$ and the wire is stretched from its original length of 10.00m to 10.05m. The young'smodulus of the wire is?

  Options:
  A) 5.0 x 10${}^{-4}$Nm${}^{-2}$
  B) 5.0 x 10${}^{-5}$Nm${}^{-2}$
  C) 2.0 x 10${}^{-8}$Nm${}^{-2}$
  D) 2.0 x 10${}^9$Nm${}^{-2}$
  Show Answer
  The correct answer is D .