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 301: If the angle of declination in a place is 10^oE, calculate the true geographic bearing if the compass reads N40^oE Options:
  A) N50^oE
  B) N40^oE
  C) N30^oE
  D) N25^oE
  Show Answer
  The correct answer is C .
• Question 302: Which of these statements are correct for the pressures in liquids? i. pressure in a liquid at a point acts equally in all directions. ii. pressure increases with depth. iii. pressure at a depth depends on the shape of the container. iv. pressure at the same depth in different liquids are proportional to the density at different liquids. Options:
  A) i, ii, iii only
  B) i, ii, iv only
  C) i, iii, iv only
  D) ii, iii, iv only
  Show Answer
  The correct answer is B .
• Question 303: An object of mass 100g projected vertically upwards from the ground level has a velocity of 20ms^-1 at a height of 10m. calculate its initial kinetic energy at the ground level.[g = 10ms^-2, neglect air resistance] Options:
  A) 10 J
  B) 20 J
  C) 30 J
  D) 50 J
  Show Answer
  The correct answer is C .
• Question 304: If a room is saturated with water vapour, the temperature of the room must be Options:
  A) at 0^oC
  B) above the dew point
  C) at 100^oC
  D) below or at the dew point
  Show Answer
  The correct answer is D .
• Question 305: If the force and the velocity on a system are each reduced simultaneously by half, the power of the system is Options:
  A) doubled
  B) reduced to a quarter
  C) reduced by half
  D) constant
  Show Answer
  The correct answer is B .
• Question 306: What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42? Options:
  A) 21^o
  B) 22^o
  C) 23^o
  D) 24^o
  Show Answer
  The correct answer is D .
• Question 307:
  

  The diagram above illustrates the penetrating power of some types of radiation. X, Y and Z are likely

  Options:
  A) X = α-particle; Y = γ-ray; Z = β-particle
  B) X = α-particle; Y = β-particle; Z = γ-ray
  C) X = γ-ray; Y = α-particle; Z = β-particle
  D) X = β-particle; Y = γ-ray; Z = α-particle
  Show Answer
  The correct answer is C .
• Question 308: A 5-v battery is connected across the plates of a 2.0$\mu$F uncharged parallel plate capacitor. The charge on the capacitor after a long time is Options:
  A) 2.5$\mu$C
  B) 10.0$\mu$C
  C) 20.0$\mu$C
  D) 50.0$\mu$C
  Show Answer
  The correct answer is B .
• Question 309: A solid weigh 10 .00 N in air, 6 N when fully immersed in water and 7 . 0 N when fully immersed in a liquid X. Calculate the relative density of the liquid, X. Options:
  A) 5/3
  B) 4/3
  C) 3/4
  D) 7/10
  Show Answer
  The correct answer is C .
• Question 310: A glass plate 0.9cm thick has a reflective index of 1.50. how long does it take for a pulse of light to pass through the plate?
  [c = 3.0 x ⁸ ms^-1] Options:
  A) 4.5 x 10^-11s
  B) 4.5 x 10^-10s
  C) 4 .5 x 10^-12 s
  D) 3.0 x 10^-10s
  Show Answer
  The correct answer is C .