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 901:

  The force exerted on a charged body in an electric field depends on I. the charge on the body

  II. the electric field intensity

  III. the square of the mass of the body

  Options:
  A) I only
  B) II only
  C) I and II only
  D) I and III only
  E) II and III only
  Show Answer
  The correct answer is C .
• Question 902:

  

  In the diagram above, what would happen to the current I, if another resistor, R₂, is connected in parallel to R₁?

  Options:
  A) It will increase because the equivalent resistance will increase
  B) It will decrease if R₂ is greater than R₁
  C) It will increase because the effective resistance will decrease
  D) It will decrease if R₂ is less than R₁
  Show Answer
  The correct answer is C .
• Question 903: A dynamo primarily converts Options:
  A) Mechanical energy into electrical energy
  B) Electrical energy into kinetic energy
  C) Potential energy into kinetic energy
  D) Kinetic energy into potential energy
  Show Answer
  The correct answer is A .
• Question 904: The S.l unit of magnetic flux density is Options:
  A) farad
  B) henry
  C) kgm^-3
  D) tesla
  E) weber
  Show Answer
  The correct answer is D .
• Question 905:

  When the downward current flows in a straight vertical conductor, the direction of its magnetic field at a point due north of the wire is

  Options:
  A) Upward
  B) North
  C) South
  D) West
  Show Answer
  The correct answer is D .
• Question 906:

  A reservoir is filled with liquid of density 2000 kgm${}^{-1}$. Calculate the depth at which the pressure in the liquid will be equal to 9100 Nm${}^{-2}$ (g = 10 ms${}^{-2}$)

  Options:
  A) 0.262 m
  B) 0.664 m
  C) 0.819 m
  D) 0.455 m
  Show Answer
  The correct answer is D .
• Question 907: The coefficient of friction between two perfectly smooth surface is Options:
  A) infinity
  B) one
  C) half
  D) zero
  Show Answer
  The correct answer is D .
• Question 908:

  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 909: 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
  E) the prism angle
  Show Answer
  The correct answer is A .
• Question 910: The instrument that measures both a.c and d.c is? Options:
  A) a current balance
  B) a moving current ammeter
  C) a moving iron ammeter
  D) an inverter
  Show Answer
  The correct answer is C .