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 1041: Which of the following devices may be used to step up the voltage in a d.c. circuit? Options:
  A) a step-up transformer
  B) a d.c. generator
  C) a wattmeter
  D) an induction coil
  Show Answer
  The correct answer is B .
• Question 1042: The resistance of a 240V, 60 watt electric filament bulb is Options:
  A) 0.25$\mathrm{\Omega }$
  B) 480$\mathrm{\Omega }$
  C) 60$\mathrm{\Omega }$
  D) 240$\mathrm{\Omega }$
  E) 960$\mathrm{\Omega }$
  Show Answer
  The correct answer is E .
• Question 1043: A dentist obtains a linear magnification of 4 of a hole in a tooth by placing a concave mirror at a distance, of 2.0cm from the tooth. The radius of Curvature of the mirror is Options:
  A) 5.3cm
  B) 3.2cm
  C) 2.7cm
  D) 1.6cm
  Show Answer
  The correct answer is B .
• Question 1044: A metal of volume 40 cm³ is heated from 30 °c to 90 °c, the increase in volume is Options:
  A) 0.12 cm³
  B) 4.00 cm³
  C) 1.20 cm³
  D) 0.40 cm³
  E) no correct option
  Show Answer
  The correct answer is E .
• Question 1045:

  A body falls freely under gravity (g = 9.8ms^-2) from a height of 40m on to the top of a platform 0.8m above the ground. Its velocity on reaching the platform is

  Options:
  A) 784ms^-1
  B) 80ms^-1
  C) 78.4ms^-1
  D) 39.2ms^-1
  E) 27.7ms^-1
  Show Answer
  The correct answer is E .
• Question 1046:

  

  What is the resultant capacity of the circuit

  Options:
  A) 1.5µF
  B) 18.0µF
  C) 6.0µF
  D) 6.8µF
  E) 8.83µF
  Show Answer
  The correct answer is A .
• Question 1047: The bond that forms a semiconductor is? Options:
  A) covalent
  B) electrovalent
  C) ionic
  D) metallic
  Show Answer
  The correct answer is A .
• Question 1048:

  A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is

  Options:
  A) 1.25 x 10${}^4$W
  B) 2.50x 10${}^4$W
  C) 1.25 x 10${}^6$W
  D) 2.50 x 10${}^6$W
  Show Answer
  The correct answer is A .
• Question 1049:

  I. The earth is not spherical but elliptical in shape

  II. Variation in latitude and longitude

  III. Rotation of the earth on its axis

  IV. Variation in the density of the earthOn which combination of the above does the weight of an object vary on the earth's surface?

  Options:
  A) I, II, III and IV
  B) II, III and IV only
  C) I, II and III only
  D) I and II only
  Show Answer
  The correct answer is D .
• Question 1050:

  I. Mass

  II. Density

  III. Temperature

  IV. Nature of substance

  Which of the above affect diffusion?

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