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 1111:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 1112: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 1113: A gas occupies a volume of 300cm³at a temperature of 27^oC. What is its volume at 54^oC, when the pressure is constant? Options:
  A) 150cm³
  B) 273cm³
  C) 327cm³
  D) 600cm³
  Show Answer
  The correct answer is C .
• Question 1114: Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V. Options:
  A) 0.02 J
  B) 0.10 J
  C) 0.20 J
  D) 1.00 J
  E) 10.00 J
  Show Answer
  The correct answer is E .
• Question 1115: If the refractive index of glass is 1.5, what is the critical angle at the air-glass interface? Options:
  A) sin^-1$\frac{1}{2}$
  B) sin^-1$\frac{2}{3}$
  C) sin^-1$\frac{3}{4}$
  D) sin^-1$\frac{8}{9}$
  Show Answer
  The correct answer is B .
• Question 1116: A cell of internal resistance 1Ω supplies current to an external resistor of 3Ω. The efficiency of the cell is Options:
  A) 25%
  B) 33%
  C) 50%
  D) 75%
  Show Answer
  The correct answer is D .
• Question 1117: The force of attraction between two point masses is 10^-4N when the distance between them is 0.18m. If the distance is reduced to 0.06m, calculate the force. Options:
  A) 1.1 x 10^-5N
  B) 3.3 x 10^-5N
  C) 3.0 x 10^-4N
  D) 9.0 x 10^-4N
  Show Answer
  The correct answer is D .
• Question 1118:

  A parallel plate capacitor separated by an air gap is made of $0.8m^2$tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate?

  Take ${\epsilon }_o$ = $8.85\times {10}^{-}12F{m}^{-}1$

  Options:
  A) 3.54nC
  B) 42.5nC
  C) 35.4nC
  D) 4.25nC
  Show Answer
  The correct answer is B .
• Question 1119: The value of x, y and z respectively in the expression M^xL^yT^z for the universal gravitational constant G are Options:
  A) 2, -3, -2
  B) -1, 3, -2
  C) -1, 2, -3
  D) -2, -1, 3
  Show Answer
  The correct answer is B .
• Question 1120: Which of the following statements is TRUE of photoelectric effect? Options:
  A) it cannot occur in liquids
  B) the energy of the emitted electrons is independent of the work function of the surface
  C) the energy of the emitted electron depends on the wavelength of the incident light
  D) the greater the intensity of the incuident light, the greater the incident of the emitted electron
  Show Answer
  The correct answer is A .