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 921: A 500kg car which was initially at rest travelled with an acceleration of 5m sec^-2, its kinetic energy after 4 seconds was Options:
  A) 10⁵J
  B) 2.5 x 10³J
  C) 2 x 10³J
  D) 5 x 10³J
  E) 5 x 10^5J`
  Show Answer
  The correct answer is A .
• Question 922: Two forces of magnitudes 7N and 3N act at right angles to each other. The angle $\theta$ between the resultant and the 7N force is given by Options:
  A) cos$\theta$ = $\frac{3}{7}$
  B) sin$\theta$ = $\frac{3}{7}$
  C) tan$\theta$ = $\frac{3}{7}$
  D) cot$\theta$ = $\frac{3}{7}$
  Show Answer
  The correct answer is C .
• Question 923: What is the frequency of the sound made by a siren having a disc with 32 holes and making 25 revolution per seconds? Options:
  A) 80Hz
  B) 600Hz
  C) 800Hz
  D) 1600Hz
  Show Answer
  The correct answer is C .
• Question 924:

  

  In the figure above, XY is of length 1m, The value of R at balance point Z is

  Options:
  A) 3.0Ω
  B) 13.3Ω
  C) 15.0Ω
  D) 30.0Ω
  Show Answer
  The correct answer is D .
• Question 925: The normal temperature of human body is record at what ranges? Options:
  A) 27°C to 43°C
  B) 30°C to 40°
  C) 98.4°C only
  D) Between 35°C to 37°C
  Show Answer
  The correct answer is D .
• Question 926: The thermometric substance of an absolute thermometer is Options:
  A) alcohol
  B) mercury
  C) helium
  D) platinum
  Show Answer
  The correct answer is B .
• Question 927: Which of the following elements is the best absorber of X-rays? Options:
  A) hydrogen
  B) oxygen
  C) calcium
  D) copper
  E) lead
  Show Answer
  The correct answer is E .
• Question 928: If 1.2 x 10⁶J of heat energy is given off in 1 sec from a vessel maintained at a temperature gradient of 30Km^-1, the surface area of the vessel is Options:
  A) 1.0 x 10²m²
  B) 9. 0 x 10²m²
  C) 1.0 x 10³m²
  D) 9.0 x 10⁴m²
  Show Answer
  The correct answer is A .
• Question 929: The theory of electronic conduction in solids, which satisfactorily explains the properties of conductors, insulators and semi-conductor,is? Options:
  A) string theory
  B) particle theory
  C) group theory
  D) band theory
  Show Answer
  The correct answer is D .
• Question 930: A transformer has a primary coil with 500 turns and a secondary coil with 2500 turns. When the voltage input to the primary coil is 120V, the output is Options:
  A) 6000V
  B) 600V
  C) 240V
  D) 60V
  E) 24V
  Show Answer
  The correct answer is B .