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 701: Total eclipse of the sun occurs when the Options:
  A) earth is between the moon and the sun
  B) sun is between the moon and the earth
  C) moon is between the sun and the earth
  D) ozone layer is threatened
  Show Answer
  The correct answer is C .
• Question 702:

  A sonometer wire is vibrating at frequency f_o. If the tension in the wire is doubted while the length and the mass per unit length are kept constant, the new frequency of vibration is

  Options:
  A) ^f_o/₂
  B) 2f_o
  C) ^f_o/_√2
  D) f_o√2
  Show Answer
  The correct answer is D .
• Question 703: An element X of an atomic number 88 and mass number 226 decays to form an element Z by emitting two beta particles and an alpha particle. Z is represented by Options:
  A) ${}_{82}^{222}Z$
  B) ${}_{88}^{222}Z$
  C) ${}_{86}^{226}Z$
  D) ${}_{80}^{226}Z$
  Show Answer
  The correct answer is B .
• Question 704:

  The part of the human eye that does similar work as the diaphragm of a camera lens is the

  Options:
  A) Ciliary muscles
  B) Pupil
  C) Iris
  D) Retina
  Show Answer
  The correct answer is C .
• Question 705:

  Consider the wave equation y = 5mm sin [1cm${}^{-1}$x - 60s${}^{-1}$t]. The wave number is?

  Options:
  A) 0.1 cm${}^{-1}$
  B) 10cm${}^{-1}$
  C) 1.0cm${}^{-1}$
  D) 2cm${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 706:

  

  What is the average velocity of the sprinter whose velocity time graph is as shown above

  Options:
  A) 85.0ms^-1
  B) 17.0ms^-1
  C) 8.0ms^-1
  D) 1.7ms^-1
  Show Answer
  The correct answer is C .
• Question 707: Calculate the angle of minimum deviation of a 60^o prism of a refractive index [sin^-10.75 = 49^o] Options:
  A) 38.00^o
  B) 19.47^o
  C) 16.25^o
  D) 49^o
  Show Answer
  The correct answer is A .
• Question 708:
  

  Consider the three forces acting at O and in equilibrium as shown in the figure. Which of the following equations is/are CORRECT?

  I.P${}_1$ cos${\theta }_1$ = p${}_1$ cos ${\theta }_2$

  II. P${}_3$ = P${}_1$ cos ${\theta }_4$ + P${}_{2}co{s}_2$

  III. P${}_1\sin {\theta }_1=P_2\sin {\theta }_2$

  Options:
  A) I only
  B) II only
  C) III only
  D) I, II and III only
  Show Answer
  The correct answer is C .
• Question 709:

  

  The diagram above shows the prism arrangement in a

  Options:
  A) Microscope
  B) tereoscope
  C) projector
  D) periscope
  E) gyroscope
  Show Answer
  The correct answer is D .
• Question 710: A cell of internal resistance 1Ω supplies current to an external resistor of 3Ω. The efficiency of the cell is Options:
  A) 25%
  B) 33%
  C) 50%
  D) 75%
  Show Answer
  The correct answer is D .