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 291: Two divers G and H are at depths 20m and 40m respectively below the water surface in a lake. The pressure on G is P₁ while the pressure on H is P₂. If the atmospheric pressure is equivalent to 10m of water, then the value of $\frac{p_2}{p_1}$ is Options:
  A) 0.50
  B) 0.60
  C) 1.67
  D) 2.00
  E) 3.0
  Show Answer
  The correct answer is D .
• Question 292:

  

  Two mirrors M1 and M2 are inclined at right angles as shown above calculate the angle of reflection of the ray of light at M2

  Options:
  A) ${30}^{\circ }$
  B) ${45}^{\circ }$
  C) ${60}^{\circ }$
  D) ${90}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 293: A man of mass 50kg ascends a flight of stains 5m high in 5 seconds. If acceleration due to gravity is 10ms${}^{-2}$ the power expended is Options:
  A) 100w
  B) 200w
  C) 400w
  D) 500w
  Show Answer
  The correct answer is D .
• Question 294:

  Calculate the mass of ice that would melt when 2kg of copper is quickly transferred from boiling water to a block of ice without heat loss (specific heat capacity of copper = 400Jkg${}^1$k${}^{-1}$, latent heat of fusion of ice = 3.3 x 10${}^5$Jkg${}^{-1}$)

  Options:
  A) $\frac{8}{33}$kg
  B) $\frac{3.3}{80}$kg
  C) $\frac{80}{33}$kg
  D) $\frac{3.3}{8}$kg
  Show Answer
  The correct answer is A .
• Question 295: A progressive wave is represented by $y=10\text{Sin}(1000\pi t-\frac{\pi x}{34})$ . two layers of the wave separated by 153cm have a phase difference of Options:
  A) 270⁰
  B) 45⁰
  C) 90⁰
  D) 180⁰
  E) No Correct Option
  Show Answer
  The correct answer is E .
• Question 296: If a car starts from rest and moves with a uniform acceleration of 10ms^-2 for ten seconds, the distance it covers in the last one second of its motion is Options:
  A) 95m
  B) 100m
  C) 500m
  D) 905m
  E) 1000m
  Show Answer
  The correct answer is A .
• Question 297:

  Natural radioactivity consists of the emission of

  Options:
  A) α- particles and β-rays
  B) α- particles and X-rays
  C) α- particles, β - rays and g-rays
  D) γ- rays and X-rays
  Show Answer
  The correct answer is C .
• Question 298:

  

  The phase difference between waves P and q in the diagram above is

  Options:
  A) 2π
  B) π
  C) ^π/₄
  D) ^π/₂
  Show Answer
  The correct answer is D .
• Question 299: Two parallel plates at a distance of 8.0 x 10^-3m apart are maintained at a p.d of 600 volts with the negative plate earthed. What is the electric field strength? Options:
  A) 4.8 Vm^-1
  B) 75.0Vm^-1
  C) 4800.0Vm^-1
  D) 75000.0Vm^-1
  Show Answer
  The correct answer is D .
• Question 300: Am elastic material has a length of 36cm when a load of 40N is hung on it and a length of 45cm when a load of 60N is hung on it. The original length of the string is Options:
  A) 12cm
  B) 20cm
  C) 18cm
  D) 15cm
  Show Answer
  The correct answer is C .