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 161: A train with an initial velocity of 20ms^-1 is subjected to a uniform deceleration of 2ms^-2. The time required to bring the train to a complete halt is Options:
  A) 40s
  B) 10s
  C) 20s
  D) 5s
  Show Answer
  The correct answer is B .
• Question 162:

  

  Each of the figures in the diagram above represent two current carrying conductors situated close to each other. In which two diagrams, are the forces between the two wires attractive

  Options:
  A) I and V
  B) I and II
  C) II and IV
  D) II and V
  E) III and IV
  Show Answer
  The correct answer is C .
• Question 163:

  

  The total power drawn from the cell in the circuit above is

  Note: The cell voltage is 12V and all three resistors are 4 ohm resistors.

  Options:
  A) 12W
  B) 24W
  C) 32W
  D) 40W
  Show Answer
  The correct answer is B .
• Question 164: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 165: the ratio of the linear expansivity of copper to that of iron is approximately 1.5. A specimen of iron and a specimen of copper expands by the same amount per unit rise in temperature. The ratio of their length is Options:
  A) 3
  B) 1.5
  C) 1.32
  D) 1
  E) 0.67
  Show Answer
  The correct answer is E .
• Question 166: The primary aim in high tension transmission is to Options:
  A) minimize electrical energy losses due to heat production
  B) increase the rate of energy transfer by using high voltage
  C) increase the current in the wire
  D) generate electricity at high current and low voltage
  Show Answer
  The correct answer is A .
• Question 167:

  

  Three 2-µF capacitors are arranged as seen in the circuit above . The effective capacitance between E and F is

  Options:
  A) 0.75µF
  B) 1.33µF
  C) 3.00µF
  D) 6.00µF
  Show Answer
  The correct answer is B .
• Question 168:

  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 169: Which of the following materials has an increase in resistance with temperature? Options:
  A) water
  B) metals
  C) wood
  D) electrolyte
  Show Answer
  The correct answer is B .
• Question 170:

  

  The air column as shown above is set into vibration by the turning fork. In this State of resonance, the waves in the air column will be

  Options:
  A) stationary and transverse
  B) stationary and longitudinal
  C) progressive and transverse
  D) progressive and longitudinal
  Show Answer
  The correct answer is B .