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 1341: Which of the following radiations cannot be deflected by a magnetic field? Options:
  A) $\alpha$
  B) $\beta$
  C) $\gamma$
  D) $\beta$ and $\gamma$
  E) none of them
  Show Answer
  The correct answer is C .
• Question 1342: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 1343: Electric motor primarily converts Options:
  A) electrical energy into chemical energy
  B) electrical energy into heat energy
  C) kinetic energy into potential energy
  D) electrical energy into mechanical energy
  E) mechanical energy into light energy
  Show Answer
  The correct answer is D .
• Question 1344: A conductor has a diameter of 1.00 mm and length 2.00m. if the resistance of the material is 0.1Ω, its resistivity is? Options:
  A) 2.55 x 10⁵ Ωm
  B) 2.55 x 10² Ωm
  C) 3.93 x 10^-6 Ωm
  D) 3.93 x 10^-8 Ωm
  Show Answer
  The correct answer is D .
• Question 1345: A vapour is said to be saturated when Options:
  A) more molecules return to the liquid than the amount that left it
  B) a dynamic equilibrium exists between the molecules of the liquid and the vapour molecules at a given temperature
  C) the vapour pressure is equal to the atmospheric pressure
  D) all molecules are moving with the same speed in all directions at a given temperature
  Show Answer
  The correct answer is B .
• Question 1346: A moving coil galvanometer of 300$\mathrm{\Omega }$ resistance gives full scale deflection for 1.0mA. The resistance R, of the shunt that is required to convert the galvanometer into a 3.0A ammeter is Options:
  A) 899.70$\mathrm{\Omega }$
  B) 10.00$\mathrm{\Omega }$
  C) 0.10$\mathrm{\Omega }$
  D) 0.01$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 1347:

  What effort will a machine of efficiency 90% apply to lift a load of 180N if its efforts arm is twice as long as its load arm?

  Options:
  A) 80N
  B) 90N
  C) 100N
  D) 120N
  Show Answer
  The correct answer is C .
• Question 1348: A force of 100N stretches an elastic string to a total length of 20cm. If an additional force of 100N stretches the string 5cm further, Find the natural length of the string Options:
  A) 15cm
  B) 12cm
  C) 10cm
  D) 8cm
  E) 5cm
  Show Answer
  The correct answer is A .
• Question 1349:

  When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

  Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .
• Question 1350: The relative density of dilute tetraoxosulphate (vi) acid in a battery is measured with a Options:
  A) barometer
  B) hydrometer
  C) manometer
  D) hypsometer
  Show Answer
  The correct answer is B .