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 211: The vacuum in a thermos flask helps to reduce heat transfer by? Options:
  A) convection and radiation
  B) convection and conduction
  C) conduction and radiation
  D) radiation only
  Show Answer
  The correct answer is B .
• Question 212: If two parallel conductors carry currents flowing in the same direction, the conducts will Options:
  A) attract each other
  B) repel each other
  C) both move in the same direction
  D) have no effect on each other
  Show Answer
  The correct answer is A .
• Question 213: Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane? Options:
  A) Random and rotational
  B) Rotational and oscillatory
  C) Rotational only
  D) Translations only
  E) Translational and rotational
  Show Answer
  The correct answer is E .
• Question 214: The pitch of a sound note depends on Options:
  A) timbre
  B) frequency
  C) harmonics
  D) quality
  Show Answer
  The correct answer is B .
• Question 215: Calculate the magnitude of the force due to a magnetic field of 0.40T on an electron moving perpendicular to the field with a speed of 4.00 × 106ms^-1 (e 1.60 × 10^-19C] Options:
  A) 6.40 × ^-10
  B) 6.40× 10^-13N
  C) 2.56 × 10^-13N
  D) 1.60 × 10^-12N
  E) 2.30 × 10^-11N
  Show Answer
  The correct answer is C .
• Question 216: A clinical thermometer is different from other mercury in glass thermometers owing to Options:
  A) the constriction on its stem
  B) the grade of mercury used in it
  C) its long stem
  D) its wide range of temperatures
  Show Answer
  The correct answer is A .
• Question 217: Which of the following is a vector? Options:
  A) Electric charge
  B) Electric field
  C) Electrical potential difference
  D) Electrical capacitance
  Show Answer
  The correct answer is B .
• Question 218: Which of the following best describes the energy changes which take place when a steam engine drives a generator which lights a lamp? Options:
  A) heat $\to$ light $\to$ sound $\to$ kinetic
  B) kinetic $\to$ light $\to$ heat $\to$ electricity
  C) heat $\to$ kinetic$\to$ electricity $\to$ heat $\to$ light
  D) electricity $\to$ kinetic $\to$ heat v light
  E) heat $\to$ sound $\to$ kninetic v electricity
  Show Answer
  The correct answer is C .
• Question 219: If a heavy barrel is rolled up a plane inclined at 30° to the horizontal. its velocity ratio will be Options:
  A) 3.0
  B) 3.1
  C) 3.2
  D) 2.0
  Show Answer
  The correct answer is D .
• Question 220: Which of the following radiations cannot be deflected by a magnetic field? Options:
  A) $\alpha$
  B) $\beta$
  C) $\gamma$
  D) $\beta$ and $\gamma$
  E) none of them
  Show Answer
  The correct answer is C .