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 1011: An object is placed 15cm in front of a concave mirror of focal length 20cm. The image formed is Options:
  A) real, inverted and diminished
  B) real, inverted and magnified
  C) virtual, erect and diminished
  D) virtual, erect and magnified
  E) virtual, inverted and magnified
  Show Answer
  The correct answer is D .
• Question 1012: Which type of radiation does not NOT originate within the nucleus? Options:
  A) alpha
  B) beta
  C) gamma
  D) neutron
  E) x-rays
  Show Answer
  The correct answer is E .
• Question 1013: The lower and upper fixed points of a mecury-in-glass thermometer are marked Y and 180mm respectively. On a particular the mecury meniscus in the thermometer rises to 45mm. If the corresponding reading on a scale is 10^o, calculate the value of Y. Options:
  A) 4mm
  B) 18mm
  C) 30mm
  D) 135mm
  E) 450mm
  Show Answer
  The correct answer is C .
• Question 1014: The sound from a source travelled to the bottom of the sea and the echo was heard 4s later. If the speed of sound in sea water is 1500ms^-1 the depth of the sea is Options:
  A) 6000m
  B) 3000m
  C) 1500m
  D) 375m
  Show Answer
  The correct answer is B .
• Question 1015:

  Which of the following liquids has the highest surface tension?

  Options:
  A) Soapy water
  B) Water
  C) Mercury
  D) Oil
  Show Answer
  The correct answer is C .
• Question 1016: When the tension in a sonometer wire is doubled, the ratio of the new frequency to the initial frequency is Options:
  A) $\frac{1}{\sqrt{2}}$
  B) $\frac{1}{2}$
  C) $\sqrt{2}$
  D) 2
  Show Answer
  The correct answer is C .
• Question 1017: A thin converging lens has a power of 4.0 diopters determined its focal length. Options:
  A) 2.50m
  B) 0.03m
  C) 5.00m
  D) 0.25m
  Show Answer
  The correct answer is D .
• Question 1018: A force of 100N stretches an elastic string to a total length of 20cm. If an additional force of 100N stretches the string 5cm further, Find the natural length of the string Options:
  A) 15cm
  B) 12cm
  C) 10cm
  D) 8cm
  E) 5cm
  Show Answer
  The correct answer is A .
• Question 1019: Lenz’s law of electromagnetic induction states that Options:
  A) a force is exerted on a current carrying conductor in a magnetic field
  B) the induced current in a conductor is in such a direction as to oppose the change producing it
  C) the magnitude of the induced electromotive force in a circuit is proportional to the rate of change of the number of lines of force linking the circuit
  D) the magnitude of the induced electromotive force is proportional to the current producing the magnetic flux
  E) whenever there is a change in the magnetic flux linked with the circuit, an electromotive is induced
  Show Answer
  The correct answer is B .
• Question 1020: If a body mass 5kg is thrown vertically upwards with velocity u,at what height will the potential energy equal to the kinetic energy? Options:
  A) h =(u)²/g
  B) h = (u)²/4g
  C) h = (2u)²/g
  D) h = (u)²/2g
  Show Answer
  The correct answer is B .