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 1871: 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 1872:

  

  In which of the points labelled A, B, C, D and E on the conductor shown would electric charge tend to concentrate most

  Options:
  A) A
  B) B
  C) C
  D) E
  Show Answer
  The correct answer is D .
• Question 1873: An arrow of mass 0.1kg moving with a horizontal velocity of 15ms^-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is Options:
  A) 15.0 ms^-1
  B) 7.5 ms^-1
  C) 3.8 ms^-1
  D) 3.0 ms^-1
  Show Answer
  The correct answer is D .
• Question 1874: Which of the following radiations cannot be deflected by a magnetic field? Options:
  A) $\alpha$
  B) $\beta$
  C) $\gamma$
  D) $\beta$ and $\gamma$
  E) none of them
  Show Answer
  The correct answer is C .
• Question 1875: If the refractive index of a medium is V2, what is the critical angle? Options:
  A) 45^o
  B) 50^o12'
  C) 56^o25'
  D) 75^o
  E) 90^o
  Show Answer
  The correct answer is A .
• Question 1876: A thermometer with an arbitrary scale S, of equal division registers -30^oS at the ice point and +90^oS at the steam point. Calculate the Celsius temperature corresponding to 60^oS Options:
  A) 25.0^oC
  B) 50.0^oC
  C) 66.7^oC
  D) 75.0^oC
  Show Answer
  The correct answer is D .
• Question 1877:

  The lower fixed part of a faulty thermometer reads 2°C while the upper fixed point is 100°C.

  What is the true temperature when the thermometer reads 51°C?

  Options:
  A) 52°C
  B) 50°C
  C) 49°C
  D) 46°C
  Show Answer
  The correct answer is B .
• Question 1878: A thin wire with heavy weights attached to both ends is hung over a block of ice resting on two supports. If the wire cuts through the ice block while the block remains solid behind the wire, the process is called Options:
  A) condensation
  B) sublimation
  C) regelation
  D) fusion
  Show Answer
  The correct answer is C .
• Question 1879:

  

  The diagram above shows a meter bridge in which two of thee arms contain resistances R and 2Ω. A balance point is obtained at 60cm from the left end , calculate the value of R

  Options:
  A) 1.2Ω
  B) 1.3Ω
  C) 3.0Ω
  D) 6.0Ω
  Show Answer
  The correct answer is C .
• Question 1880: Tea pots are often silver-coated to prevent heat loss by Options:
  A) conduction only
  B) convention only
  C) convection and conduction
  D) radiation only
  Show Answer
  The correct answer is D .