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 901: Which of the following phenomena is called photoelectric effect? Options:
  A) high energy electrons impinge on a metalic anode which then emits photons
  B) a high energy photon emits photons as it slowed down
  C) a metal absorbs quanta of light and then emits electrons
  D) Two electrons are created from a quantum of light
  Show Answer
  The correct answer is C .
• Question 902: 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 903: A sealed flask contains 600cm³ of air at 27°C and is heated to 35°C at constant pressure. The new volume is? Options:
  A) 508 cm³
  B) 516 cm³
  C) 608 cm³
  D) 616 cm³
  Show Answer
  The correct answer is D .
• Question 904: A liquid-in-glass thermometer should quickly register temperature changes. This is achieved by choosing a liquid that Options:
  A) is opaque
  B) has high density
  C) has regular expansion
  D) has a high thermal conductivity
  E) can wet glass
  Show Answer
  The correct answer is D .
• Question 905: The motion of the moving skin of a talking drum can rightly be described as Options:
  A) translational
  B) random
  C) rotational
  D) oscillatory
  E) transitory
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  The correct answer is D .
• Question 906: 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 907:

  

  The fig above shows two connected bodies of masses M1 and M2 in equilibrium under gravity. The tension in the upper string is

  Options:
  A) (m1-m2)g
  B) m1g
  C) m2g
  D) (m1+m2)g
  Show Answer
  The correct answer is D .
• Question 908: If the decay constant of a radioactive substance is 0.231s¹, the half-life is? Options:
  A) 3.00 s
  B) 0.12 s
  C) 0.33 s
  D) 1.50 s
  Show Answer
  The correct answer is A .
• Question 909: The principle of transmissibility of pressure in a fluid at rest in all directions is known as Options:
  A) Archimede's principle
  B) Flotation Principle
  C) Newton's lwa
  D) Pascal's law
  E) Boyle's law
  Show Answer
  The correct answer is D .
• Question 910: A piece of stone attached to one end of a string is whirled round in a horizontal circle and the string suddenly cuts. The stone will fly off in a direction Options:
  A) perpendicular to the circular path
  B) parallel to the circular path
  C) tangential to the circular path
  D) towards the center of the circle
  Show Answer
  The correct answer is C .