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 1921: In an experiment to determine terminal velocity, as the pressure increases, the viscosity off a liquid Options:
  A) increases
  B) decreases
  C) increases then decreases
  D) remains constant
  Show Answer
  The correct answer is D .
• Question 1922: Which of the following statements is applicable to a real image formed by a concave mirror? i. it can be observed on a screen ii. it is always inverted and in front of the mirror iii. it only seams to exist IV. it is formed by the actual converging of rays of light Options:
  A) i, ii and iii
  B) i, ii and iv only
  C) i and ii only
  D) i and ii only
  E) all four statements
  Show Answer
  The correct answer is B .
• Question 1923:

  Tha mass of a proton is approximately equal to that of

  Options:
  A) an $\alpha$-particle
  B) a $\beta$-Particle
  C) a neutron
  D) an electron
  Show Answer
  The correct answer is C .
• Question 1924: The atmospheric pressure due to water is 1.3 x 10⁶Nm^-2. What is the total pressure at the bottom of an ocean 10m deep? [Density of water = 1000kgm^-3, g = 10ms^-2] Options:
  A) 1.3 x 10⁷Nm^-2
  B) 1.4 x 10⁶Nm^-2
  C) 1.4 x 10⁵Nm^-2
  D) 1.0 x 10 ⁵Nm^-2
  Show Answer
  The correct answer is B .
• Question 1925: Which of the following phenomena explains the fact that a house whose roof is coated with white paint will be cooler in the hot season than one coated with black paint ? Options:
  A) conduction
  B) convection
  C) refraction
  D) reflection
  Show Answer
  The correct answer is D .
• Question 1926: Heat transfer by convection in a liquid is due to the Options:
  A) Latent heat of vaporization of the liquid
  B) Increased vibration of the molecules of the liquid about theit mean position
  C) Variation of density of the liquid
  D) Expansion of the liquid as it is heated
  Show Answer
  The correct answer is D .
• Question 1927:

  

  A body is acted upon by forces applied at points P and Q as shown above their resultant is equal to

  Options:
  A) 2√5N in adirection N 56◦ E
  B) 2√5N in adirection N 56◦ W
  C) 2√13N in adirection N 56◦ E
  D) 2√13N in adirection N 56◦ W
  E) √10N in adirection N 56◦ E
  Show Answer
  The correct answer is C .
• Question 1928:

  An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?

  Options:
  A) 26.25 cm behind the mirror
  B) 10.5 cm behind the mirror
  C) 26.25 cm in front of the mirror
  D) 10.5 cm in front of the mirror
  Show Answer
  The correct answer is A .
• Question 1929: A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are Options:
  A) 0^o and 0^o
  B) 60^o and 60^o
  C) 90^o and 90^o
  D) 90^o and 0^o
  E) 0^o and 90^o
  Show Answer
  The correct answer is D .
• Question 1930: The temperature gradient across a copper rod of thickness 0.02m, maintained at two temperature junctions of 20°C and 80°C respectively is Options:
  A) 3.0 x 10²Km^-1
  B) 3.0 x 10³Km^-1
  C) 5.0 x 10³Km^-1
  D) 3.0 x 10⁴Km^-1
  Show Answer
  The correct answer is B .