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 1291: A cone in an unstable equilibrium has its potential energy Options:
  A) decreased
  B) increased
  C) unchanged
  D) oscillating
  Show Answer
  The correct answer is B .
• Question 1292: 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 1293: During a thunderstorm, the sound is heard over a long time. this phenomenon is referred to as Options:
  A) diffraction of sound
  B) refraction of sound
  C) superposition
  D) reveraberation
  Show Answer
  The correct answer is D .
• Question 1294: The instantaneous value of the induced e.m.f as a function of time is ε = ε_o sin ωt where ε_o is the peak value of the e.m.f. The instantaneous value of the e.m.f., one quarter of the period is Options:
  A) 0.00
  B) ^ε_o/₄
  C) ^ε_o/₂
  D) ε_o
  Show Answer
  The correct answer is D .
• Question 1295: The image is a plane mirror is Options:
  A) inverted, real with a magnificant of $\frac{1}{2}$
  B) inverted, virtual with a magnification of 1
  C) inverted, real with a magnification of 2
  D) upright, virtual with a magnificent of 1
  E) upright, real with a magnification of 2
  Show Answer
  The correct answer is D .
• Question 1296: The volume of a fixed mass of gas is 10cm³ when its pressure is 400cmHg. Determine the volume of the gas when its pressure is 200cmHg. Options:
  A) 30cm³
  B) 40cm³
  C) 50cm³
  D) 20cm³
  Show Answer
  The correct answer is D .
• Question 1297:

  In an inelastic collisionI. Energy is conversed

  II. Energy is decreased

  III. Energy is increased

  IV. Linear momentum conversed

  Options:
  A) I only
  B) II and IV only
  C) II only
  D) III only
  Show Answer
  The correct answer is B .
• Question 1298:

  

  An electrical circuit is connected up as shown above, which of the following is correct about the value of current flowing through the 1 ohm resistance?

  Options:
  A) 12/13A
  B) 13/12A
  C) 1/3A
  D) 3A
  E) 12/7A
  Show Answer
  The correct answer is D .
• Question 1299: A boy looks at the image of an object in a plane mirror. He observes two images, a main bright one and the other faint. The observed images result from Options:
  A) reflection only
  B) refraction only
  C) diffraction and interference
  D) reflection and refraction
  E) reflection and diffraction
  Show Answer
  The correct answer is A .
• Question 1300:

  I. Its velocity is constant

  II. No work is done on the body

  III. It has constant acceleration directed away from the centre

  IV. The centripetal force is directed towards the centreWhich combination of the above is true of a body moving with constant speed in a circular track?

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