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 1211: What are the units of thermal conductivity? Options:
  A) kg.m.sec²
  B) Joule sec^-1m^-1k^-1
  C) kg.m
  D) Newton sec^-1m²
  E) m³
  Show Answer
  The correct answer is B .
• Question 1212: In a resonance tube experiment, the effective length of the air column for the first resonance is 20cm when set into vibration by a tuning fork of frequency 480Hz. Neglecting and effect, the velocity of sound in air is Options:
  A) 96ms^-1
  B) 255ms^-1
  C) 340ms^-1
  D) 384ms^-1
  Show Answer
  The correct answer is D .
• Question 1213: 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 1214:

  A single force which produces the same effect as a set of forces acting together at a point is known as the

  Options:
  A) component
  B) equilibrant
  C) resultant
  D) resistant
  Show Answer
  The correct answer is C .
• Question 1215: Under constant tension and constant mass per unit length, the note produced by a plucked string is 500Hz when the length of the string is 0.90m. At what length is the frequency 150Hz? Options:
  A) 3m
  B) 4m
  C) 5m
  D) 6m
  Show Answer
  The correct answer is A .
• Question 1216:

  

  A beam of radiation is passed between a pair of charged plates as indicated in the fig above. Beam P is undetected While Q is deflected to the left. P and Q respectively should be

  I.γ-rays β-rays
  II. x-rays β-rays
  III. γ-rays x-rays
  IV. x-rays x-rays

  Options:
  A) I only
  B) III only
  C) I and II
  D) III and IV
  Show Answer
  The correct answer is A .
• Question 1217: A spectrum of sunlight is said to be impure when Options:
  A) it is made of only three colours
  B) it has no red colour in it
  C) the different colours in it overlap
  D) it does not contain white light
  Show Answer
  The correct answer is C .
• Question 1218: The focal length of a concave mirror is 2.0cm. If an object is placed 8.0cm from it, the image is at Options:
  A) 2.7m
  B) 2.0m
  C) 2.3m
  D) 2.5m
  Show Answer
  The correct answer is A .
• Question 1219:

  A carpenter on top of a roof of 20.0m high dropped a hammer of mass 1.5 kg and it fell directly to the ground. the kinetic energy of the hammer just before hitting the ground is?

  [g = 10 ms^-2]

  Options:
  A) 600 J
  B) 150J
  C) 300 J
  D) 450 J
  Show Answer
  The correct answer is C .
• Question 1220: An electric heater with a p.d of 240 V connected across its terminals has a total resistance of 960Ω. find the power rating of the heater. Options:
  A) 0.25 W
  B) 4.00 W
  C) 38.40W
  D) 60.00W
  Show Answer
  The correct answer is D .