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 1171: In which of the following is surface tension important? Options:
  A) the floating of a ship in water
  B) the floating of a dry needle in water
  C) the floating of a baloon in air
  D) the diffusion of sugar solution across a membrane
  Show Answer
  The correct answer is B .
• Question 1172: If the force of a charge of 0.2 coulomb in an electric field is 4N, then the electric field intensity of the field is Options:
  A) 0.8
  B) 0.8N/C
  C) 20.0N/C
  D) 4.2N/C
  E) 20.0N/C
  Show Answer
  The correct answer is C .
• Question 1173: In A.C circuit theory, the root means square (r.m.s) current, I_rms and the peak (maximum)current I_o are related by Options:
  A) I_o = $\frac{I_{r}ms}{\sqrt{2}}$
  B) I_rms = $\frac{I_o}{\sqrt{2}}$
  C) I_rms = $\frac{\frac{I}{I_o}}{\sqrt{2}}$
  D) I_rms = $\frac{I_{r}ms}{\sqrt{2}}$
  Show Answer
  The correct answer is B .
• Question 1174:

  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 1175: Three cells each of e.m.f. 1.5v and an internal resistance of 1.0$\mathrm{\Omega }$ are connected in parallel across a load resistance of 2.67$\mathrm{\Omega }$. Calculate the current in the load? Options:
  A) 0.26A
  B) 0.41A
  C) 0.50A
  D) 0.79A
  Show Answer
  The correct answer is C .
• Question 1176: A stone of mass m kg is held h meters above the floor for 50s. The work done in joules over this period is Options:
  A) mh
  B) mgh
  C) $\frac{mgh}{50}$
  D) O
  Show Answer
  The correct answer is D .
• Question 1177:

  

  What is the reading of the vernier scale above?

  Options:
  A) 1.88cm
  B) 1.80cm
  C) 1.28cm
  D) 1.97cm
  Show Answer
  The correct answer is A .
• Question 1178:

  When a yellow card is observed through blue glass, the card would appear

  Options:
  A) black
  B) green
  C) red
  D) white
  Show Answer
  The correct answer is A .
• Question 1179:

  A beam of light travelling in water is incident on a glass which is immersed in the water. The incident beam makes an angle of ${40}^o$ with the normal. Calculate the angle of refraction in the glass.

  [Refractive index of water = 1.33, Refractive index of glass = 1.5]

  Options:
  A) ${29.36}^o$
  B) ${25.37}^o$
  C) ${37.21}^o$
  D) ${34.75}^o$
  Show Answer
  The correct answer is D .
• Question 1180: The pitch of an acoustic device can be increased by Options:
  A) increasing the frequency
  B) increasing the amplitude
  C) decreasing the loudness
  D) decreasing the intensity
  Show Answer
  The correct answer is A .