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 1641: The linear expansivity of brass is 2 x 10^-5oC^-1. If the volume of a piece of brass is 10cm³ at 0^oC, what will be its volume at 100^oC? Options:
  A) 10.02cm³
  B) 10.04cm³
  C) 10.06cm³
  D) 10.20cm³
  E) 102.00cm³
  Show Answer
  The correct answer is C .
• Question 1642: what is likely to happen if the glass of a thermometer expands more upon heating than the liquid inside? Options:
  A) the glass will break
  B) the glass will shrink
  C) the liquid will rise up in the stem
  D) the liquid will go down in the stem
  Show Answer
  The correct answer is D .
• Question 1643:
  

  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 1644: Two cells each of e.m.f. 1.5V and an internal resistance 2$\mathrm{\Omega }$ are connected in parallel. Calculate the current flowing when the cells are connected to a 1$\mathrm{\Omega }$ resistor Options:
  A) 0.75$\mathrm{\Omega }$
  B) 1.5$\mathrm{\Omega }$
  C) 0.5$\mathrm{\Omega }$
  D) 1.0$\mathrm{\Omega }$
  E) 0.6$\mathrm{\Omega }$
  Show Answer
  The correct answer is A .
• Question 1645: When a red rose flower is observed in blue light, what colour does the observer see? Options:
  A) Red
  B) Blue
  C) Magenta
  D) yellow
  E) No correct option
  Show Answer
  The correct answer is E .
• Question 1646: The r.m.s value of a supply voltage is quoted at 200v. What is the approximate peak value of the voltage? Options:
  A) 200volts
  B) 300volts
  C) 283volts
  D) 250volts
  Show Answer
  The correct answer is C .
• Question 1647: The wavelength of the first overtone of a note in a closed pipe of length 33 cm is? Options:
  A) 33 cm
  B) 44 cm
  C) 22 cm
  D) 17 cm
  Show Answer
  The correct answer is B .
• Question 1648: mercury is a better barometric fluid than water because i. it needs no colouring ii. its density is many times greater than that of water iii. it does not wet glass iv. it has a high vapour pressure v. it has a high boiling point. which of the above statements are true? Options:
  A) i and ii only
  B) i, ii and iii only
  C) iii and iv only
  D) iv and v only
  E) iii, iv and v only
  Show Answer
  The correct answer is B .
• Question 1649: What is the angle of dip at the magnetic equator Options:
  A) ${45}^{\circ }$
  B) $0^{\circ }$
  C) ${90}^{\circ }$
  D) ${180}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 1650: The echo of a sounder from the bottom of an ocean is heard 2.5 seconds later. If the speed of sound in water is 1,400ms^-1, the depth of the ocean is Options:
  A) 1,750m
  B) 3,500m
  C) 1,400m
  D) 2,800m
  E) 2,100m
  Show Answer
  The correct answer is A .