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 1221: An open pipe closed at one end produces its first fundamental note. If the velocity of sound in air is P and t the length of the pipe, the frequency of the note is Options:
  A) ^2v/_t
  B) ^v/_5t
  C) ^v/_4t
  D) ^v/_2t
  Show Answer
  The correct answer is C .
• Question 1222: In a nuclear fusion process, four protons each of mass M_p were fused to produce a nucleus X of mass M_x. Which of the following equations is CORRECT? Options:
  A) 4M_p > M_x
  B) 4M_p = M_x
  C) 4M_p< M_x
  D) M_p > M_x
  Show Answer
  The correct answer is B .
• Question 1223: In homes, electrical appliances and lamps are connected in parallel because Options:
  A) Parallel connections do not heat up the wires
  B) series connections use high voltage
  C) less current will be used
  D) less voltage will be used
  Show Answer
  The correct answer is C .
• Question 1224: The photocell works on the principle of the Options:
  A) voltaic cell
  B) emision of electrons by incident radiation
  C) emision of protons by incident electrons
  D) photographic plate
  Show Answer
  The correct answer is B .
• Question 1225:

  

  In the above circuit diagrams A is the ammeter and V is the Voltmeter. Which of the circuits is correct for finding the correct value of the resistance R

  Options:
  A) I
  B) II
  C) III
  D) IV
  Show Answer
  The correct answer is A .
• Question 1226:

  The inner diameter of a test tube can be measured accurately using a?

  Options:
  A) micrometer screw gauge
  B) pair of dividers
  C) meter rule
  D) pair of vernier calipers
  Show Answer
  The correct answer is D .
• Question 1227: At what frequency would a 10H inductor have a reactance of 2000Ω? Options:
  A) π/200Hz
  B) π/100Hz
  C) 100/πHz
  D) 100πHz
  Show Answer
  The correct answer is C .
• Question 1228: 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 1229: The surfaces of conveyor belts are made rough so as to Options:
  A) protect them while carrying loads
  B) prevent the loads from slipping
  C) enable them to carry more load
  D) make them stronger
  Show Answer
  The correct answer is B .
• Question 1230:

  

  Which of the following bodies, each with centre of gravity G, lying on a horizontal table, is/are in unstable equilibrium?

  Options:
  A) II only
  B) III only
  C) I and IV only
  D) II and III only
  Show Answer
  The correct answer is B .