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 471: The wavelength of a stationary wave is 36.0cm. What is the distance between a node and the next anti-node? Options:
  A) 6.0cm
  B) 9.0cm
  C) 18.0cm
  D) 360cm
  E) 72.0cm
  Show Answer
  The correct answer is B .
• Question 472: The thermometric properties of the thermocouple is that is Options:
  A) e.m.f. changes with temperature
  B) resistance changes with temperature
  C) volume changes with temperature
  D) pressure changes with resistance
  Show Answer
  The correct answer is A .
• Question 473: When a resistor of resistance R is connected across a.c. the terminal p.d. of the cell is reduced to three-quart its e.m.f. The cell’s internal resistance in terms of R is Options:
  A) $\frac{R}{4}$
  B) $\frac{R}{3}$
  C) $\frac{R}{2}$
  D) 2$\frac{R}{3}$
  E) R
  Show Answer
  The correct answer is A .
• Question 474: Which of the following is NOT part of an a.c generator? Options:
  A) Commutator
  B) Armature
  C) Field magnet
  D) Carbon brushes
  E) Slip rings
  Show Answer
  The correct answer is B .
• Question 475: A hose of cross-sectional area 0.5m² is used to discharge water from a water tanker at a velocity of 60ms^-1 in 20s into a container. If the container is filled completely, the volume of the container is Options:
  A) 240m³
  B) 600m ³
  C) 2400m ³
  D) 6000m³
  Show Answer
  The correct answer is B .
• Question 476: Which of the following is a derived unit? Options:
  A) Kilogramme
  B) Meter
  C) Kelvin
  D) Newton
  Show Answer
  The correct answer is D .
• Question 477:

  

  In the series a.c circuit shown above, the p.d across the inductor is 8V_r.m.s and that across the resistor is 6V_r.m.s. The effective voltage is

  Options:
  A) 2V
  B) 10V
  C) 14V
  D) 48V
  Show Answer
  The correct answer is B .
• Question 478: The resultant of two forces is 50N. If the forces are perpendicular to each other and one of them makes an angle 0f 30^o with the resultant, find its magnitude. Options:
  A) 100.0N
  B) 57.7N
  C) 43.3N
  D) 25.0N
  Show Answer
  The correct answer is C .
• Question 479:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 480: A blacksmith heated a metal whose cubic expansivity is 6.3 x 10^-6K^-1. The areal expansivity is Options:
  A) 2.0 x 10^-6K^-1
  B) 2.1 x 10^-6K^-1
  C) 4.2 x 10^-6K^-1
  D) 6.3 x 10^-6K^-1
  Show Answer
  The correct answer is C .