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 271: If the distance between two stationary charged particle is doubled, the magnitude of the electro-static force between them will be Options:
  A) doubled
  B) halved
  C) a quarter of its former value
  D) unchanged
  E) four times the original value
  Show Answer
  The correct answer is C .
• Question 272: Calculate the angle of minimum deviation of a 60^o prism of a refractive index [sin^-10.75 = 49^o] Options:
  A) 38.00^o
  B) 19.47^o
  C) 16.25^o
  D) 49^o
  Show Answer
  The correct answer is A .
• Question 273: Which of the following will convert a milliammeter to a voltmeter? Options:
  A) low series resistance
  B) low parallel resistance
  C) high series resistance
  D) high parallel resistance
  E) parallel resistance equal to milliammeter resistance
  Show Answer
  The correct answer is C .
• Question 274: A steel wire of length 0.50m is stretched between two fixed points and its fundamental frequency is 200Hz. The speed of the wave in the wire is Options:
  A) 100ms^-1
  B) 120ms^-1
  C) 200ms^-1
  D) 250ms^-1
  Show Answer
  The correct answer is C .
• Question 275: What is the length of liquid column in a barometer tube that would support an atmospheric pressure of 102000Nm^-2 if the density of the liquid is 2600kgm^-3? [g = 10ms^-2] Options:
  A) 0.75m
  B) 0.76m
  C) 3.92m
  D) 39.23m
  Show Answer
  The correct answer is C .
• Question 276:

  

  The diagram above represents balls in an undulating surface. Which of the following option represents positions of stable equilibrium?

  Options:
  A) III, IV and VIII
  B) II, V and VIII
  C) III, VI and IX
  D) I, IV and VII
  Show Answer
  The correct answer is C .
• Question 277:

  

  A capacitor of 10µF is connected across a cell of 12 volts as shown above, calculate the energy stored in the capacitor

  Options:
  A) 7.2 x 10^-4J
  B) 1.4 x 10^-3J
  C) 1.4 x 10^-3J
  D) 1.2 x 10^-2J
  Show Answer
  The correct answer is A .
• Question 278: Which of the following quantities has the same unit as the watt? Options:
  A) Force x time
  B) Force x distance
  C) Force x acceleration
  D) Force x velocity
  Show Answer
  The correct answer is D .
• Question 279:

  When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

  Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .
• Question 280:

  Which of the following is not a consequence of hydrogen bubbles covering the copper plate of a primary cell?

  Options:
  A) formation of hydrogen bubbles on the electrode
  B) increase in the resistance of the cell
  C) local action
  D) polarization
  Show Answer
  The correct answer is C .