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 401:

  

  An air column 10cm in length is trapped into the sea end of a capillary tube by a 15cm column of mercury with the tube held vertically as shown above. On inverting the tube the air column becomes 15cm long. The atmospheric pressure during the experiment is

  Options:
  A) 90cm
  B) 76cm
  C) 75cm
  D) 60cm
  E) 50cm
  Show Answer
  The correct answer is B .
• Question 402: Light of wavelength 5000 x 10^-8cm travels in free space with a velocity of 3 x 10⁸ms^-1. What is its wavelength in glass of refractive index 1.5? Options:
  A) 3333 x 10^-8cm
  B) 5000 x 10^-8cm
  C) 6666 x10^-8cm
  D) 750010^-8cm
  Show Answer
  The correct answer is A .
• Question 403: When taking a penalty kick, a footballer applies a force of 30.0N for a period of 0.05s. if the mass of the ball is 0.075kg, calculate the speed with which the ball moves off. Options:
  A) 4.50ms^-1
  B) 11.25ms^-1
  C) 20.00ms^-1
  D) 45.00ms^-1
  Show Answer
  The correct answer is C .
• Question 404: A stone, Q is thrown with velocity U at an angle of 75^o to the horizontal. Another stone R is thrown with the same velocity U but with an angle of 15^o to the horizontal. The ranges covered by the stones will be Options:
  A) greater for Q
  B) greater for R
  C) the same for Q and R
  D) greater for the heavier of the two stones
  Show Answer
  The correct answer is C .
• Question 405: Consider a thick glass tumbler and a thin glass tumbler which are made of the same kind of glass. Some hot liquid is poured into them. Which of the following statements is correct? Options:
  A) the thick tumbler is less likely to crack because it is stronger
  B) the thick tumbler is less likely to crack because it insulates the heat beter, glass being a poor conductor of heat
  C) Both tumblers are equally likely to crack because they are made of the same kind of glass
  D) the thick tumbler is more likely to crack because uneven expansion persists for a longer time within the thicker glass
  E) the thick tumbler is more likely to crack because it is heavier
  Show Answer
  The correct answer is C .
• Question 406: An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is? Options:
  A) 9 A
  B) 8 A
  C) 6 A
  D) 7 A
  Show Answer
  The correct answer is B .
• Question 407: Heat is supplied to a block of ice 0^o until half of it has melted. Which of the following statements is true? Options:
  A) the temperature rises and the ice exoands
  B) the temperature remains constant and the volume of ice decreases
  C) the ice gives out heat as it melts
  D) the mass remains constant and the temperature increases
  E) the mass decreases because some heat is lost to the atmosphere
  Show Answer
  The correct answer is B .
• Question 408: The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to Options:
  A) absorb the neutrons and hence halt the nuclear process
  B) create the neutrons and hence slow up the nuclear process
  C) slowdown the neutrons and hence slow up the nuclear process
  D) speed up the neutrons and hence speed up the nuclear process
  Show Answer
  The correct answer is C .
• Question 409: If the volume of a gas is recoded as 76cm³ at a temperature of 27°C with a pressure of 800mmHg. What will be the volume of the gas at S.T.P? Options:
  A) 36.2cm³
  B) 25.7cm³
  C) 72.8cm³
  D) 24.3cm³
  Show Answer
  The correct answer is C .
• Question 410:

  

  The diagram above shows two capacitors P and Q of capacitance 2μF and 4μF respectively connected to a d.c source. The ratio of energy stored in P to Q is

  Options:
  A) 4:1
  B) 2:1
  C) 1:4
  D) 1:2
  Show Answer
  The correct answer is D .