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 41:

  

  Given that SQ = 10cm and SP = 6cm, the refractive index of a block of glass shown above is

  Options:
  A) 0.30
  B) 0.60
  C) 1.67
  D) 2.33
  E) 2.36
  Show Answer
  The correct answer is C .
• Question 42: Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination? Options:
  A) 6.0V, 16Ω
  B) 6.0V, 1Ω
  C) 1.5V, 4Ω
  D) 1.5V, 1Ω
  Show Answer
  The correct answer is D .
• Question 43:

  A boy pushes a 500kg box along a floor with a force of 2000N. If the velocity of the box is uniform, the co-efficient of friction between the box and the floor is

  Options:
  A) 1
  B) 0.8
  C) 0.65
  D) 0.4
  Show Answer
  The correct answer is D .
• Question 44:

  The vapour pressure?

  Options:
  A) increases non-linearly with measuring temperature
  B) increases linearly with increasing temperature
  C) decreases linearly with increasing temperature
  D) decreases non-linearly ith measuring temperature
  Show Answer
  The correct answer is A .
• Question 45: A 2000W electric heater is used to heat a metal object of mass 5kg initially at 10^oC. If a temperature rise of 30^oC is obtained after 10min, the heat capacity of the material is Options:
  A) 6.0 x 10⁴J^oC^-1
  B) 4.0 x 10⁴J^oC^-1
  C) 1.2 x 10⁴J^oC^-1
  D) 8.0 x 10⁴J^oC^-1
  Show Answer
  The correct answer is B .
• Question 46:

  

  In the diagram given the hanging mass m₂ is adjusted until m₁ is on the verge of sliding. The coefficient of static

  Options:
  A) $\frac{m_1}{m_2}$
  B) $\frac{m_{1}g}{m_2}$
  C) $\frac{m_2}{m_1}$
  D) $\frac{m_{2}g}{m_1}$
  Show Answer
  The correct answer is C .
• Question 47: A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule? Options:
  A) 95cm
  B) 25cm
  C) 20cm
  D) 5cm
  Show Answer
  The correct answer is B .
• Question 48:

  23	Na + X →	20	F +	4	He
  11		9		2

  What particle is X in the reaction above?

  Options:
  A) Alpha
  B) Beta
  C) Neurons
  D) Gamma
  Show Answer
  The correct answer is C .
• Question 49: Which of the following assumptions is made in a simple pendulum experiment? the Options:
  A) suspending string is inextensible
  B) bob has a finite size
  C) bob has a definite mass
  D) initial angle of oscillation must be large
  Show Answer
  The correct answer is A .
• Question 50: If the inclination at Ibadan is 7^oS, this means that Options:
  A) the angle between the geographic meridian and the magnetic meridian at Ibadan is 7^o
  B) the earth's magnetic intensity at Ibadan makes angle 7^o with the horizontal direction
  C) a magnetic needle will be inclined at 7^o to the vertical at Ibadan
  D) the north pole of a magnetic needle dips downward at Ibadan
  Show Answer
  The correct answer is B .