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 361: 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 362:

  Which of the following may be used to determine the relative humidity in a physics laboratory I. Manometer

  II. Wet-and-Dry Bulb Hygrometer

  III. Hair Hygrometer

  IV. A Hydrometer

  Options:
  A) I Only
  B) II and III Only
  C) II Only
  D) III Only
  E) II,IIIand IV Only
  Show Answer
  The correct answer is B .
• Question 363: The length of a side of a metallic cube at 20° C is 5.0cm. Given that the linear expansively of the metal is 4.0 × 10^-5K^-1, find the volume of the cube at 120° C Options:
  A) 124.50cm³
  B) 125.00cm³
  C) 126.00cm³
  D) 126.25cm³
  E) 126.50cm³
  Show Answer
  The correct answer is E .
• Question 364:
  

  Find the tension in the two cords shown in the figure above. Neglect the mass of the cords, and assume that the angle is 38° and the mass m is 220 kg

  [Take g = 9.8 ms-2]

  Options:
  A) $T_1$ = 2864 N, $T_2$= 3612 N
  B) $T_1$= 3612 N, $T_2$ = 2864 N
  C) $T_1$= 3502 N, $T_2$= 2760 N
  D) $T_1$ = 2760 N, $T_2$ = 3502 N
  Show Answer
  The correct answer is C .
• Question 365: Consider a thick glass tumbler and a thin glass tumbler which are made of the same kind of glass. Some hot liquid is poured into them. Which of the following statements is correct? Options:
  A) the thick tumbler is less likely to crack because it is stronger
  B) the thick tumbler is less likely to crack because it insulates the heat beter, glass being a poor conductor of heat
  C) Both tumblers are equally likely to crack because they are made of the same kind of glass
  D) the thick tumbler is more likely to crack because uneven expansion persists for a longer time within the thicker glass
  E) the thick tumbler is more likely to crack because it is heavier
  Show Answer
  The correct answer is C .
• Question 366: A machine whose efficiency is 60% has a velocity ratio of 5. If a force of 500N is applied to lift a load P, what is the magnitude of P? Options:
  A) 1500N
  B) 500N
  C) 4166N
  D) 750N
  Show Answer
  The correct answer is A .
• Question 367: The amount of heat needed to raise the temperature of 10kg of copper by 1k is its Options:
  A) specific heat capacity
  B) heat capacity
  C) latent heat
  D) internal energy
  Show Answer
  The correct answer is B .
• Question 368: The rate of cooling of a heated quantity of liquid in an enclosure depends on the Options:
  A) Pressure of the liquid
  B) Temperature in the enclosure
  C) Pressure of the enclosure
  D) Volume of the liquid
  Show Answer
  The correct answer is B .
• Question 369: A body of weight W N rest on a smooth plane inclined at an angle$\theta$^o to the horizontal. What is the resolved part of the weight in Newtons along the plane? Options:
  A) W sin$\theta$
  B) W cos$\theta$
  C) W sec$\theta$
  D) W tan$\theta$
  Show Answer
  The correct answer is A .
• Question 370: For which of the following sets are the units fundamental? Options:
  A) Area, length and volume
  B) Impulse, mass and time
  C) Length, time and mass
  D) Velocity, distance and time
  E) Volume, mass and density
  Show Answer
  The correct answer is C .