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 301: What type of reaction is represented by the equation ${}_1^{2}X{+}_1^{2}X{\to }_2^{3}Y{+}_0^{1}n+Energy$ Options:
  A) Ionization
  B) Fusion
  C) Fission
  D) Chain
  Show Answer
  The correct answer is B .
• Question 302: A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms^-1 from the top of a tower 10m high. Neglecting air resistance, its total energy just before hitting the ground is(take g = 10ms^-2) Options:
  A) 5 J
  B) 10 J
  C) 15 J
  D) 20 J
  Show Answer
  The correct answer is C .
• Question 303:

  I. Coherence

  II. Same frequency

  III. Same wavelength

  IV. Same IntensityWhich of the conditions above are necessary to produce interference fringes?

  Options:
  A) I and III
  B) I, II and IV
  C) I, II and III
  D) II and III
  Show Answer
  The correct answer is C .
• Question 304:

  Which of the following is not correct about the molecules of a substance in a gaseous state. They?

  Options:
  A) are in a constant state of motion
  B) have different speeds
  C) have a temperature which is measured by the average kinetic energy
  D) The collision between the gases is perfectly inelastic
  Show Answer
  The correct answer is D .
• Question 305:

  Electrical appliances in homes are normally earthed so that

  Options:
  A) a person touching the appliances is safe from electric shock
  B) both the a.c. and d.c. sources can be used
  C) the appliances are maintained at a higher pd than the earth
  D) the appliances are maintained at a lower pd than the earth
  Show Answer
  The correct answer is A .
• Question 306: If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600µc across the field is Options:
  A) 0.8j
  B) 1.8j
  C) 9.0j
  D) 18.0j
  Show Answer
  The correct answer is B .
• Question 307: Three capacitors of capacitance 2μF, 4μFand 8μF are connected in parallel and a P.D of 6V is maintained across each capacitor, the total energy stored is Options:
  A) 2.52 x 10^-6J
  B) 6.90 x 10^-6J
  C) 2.52 x 10^-4J
  D) 6.90 x 10^-4J
  Show Answer
  The correct answer is C .
• Question 308: One of the most important applications of bi-metallic strip is found in the construction of Options:
  A) a thermostat
  B) an altimeter
  C) a thermocouple
  D) a hydrometer
  Show Answer
  The correct answer is A .
• Question 309: The velocities of light in air and glass are 3.0 x 10⁸ms^-1 and 2.0 x 10⁸ms^-1 respectively. If the angle of refraction is 30°, the sine of the angle of incidence is Options:
  A) 0.33
  B) 0.50
  C) 0.67
  D) 0.75
  Show Answer
  The correct answer is D .
• Question 310: The main reason for making the cover of a vacuum flask airtight is to prevent heat loss by Options:
  A) convection
  B) conduction
  C) radiation
  D) evaporation
  Show Answer
  The correct answer is A .