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 391: An astronomical telescope is said to be in normal adjustment when the Options:
  A) eye is accommodated
  B) focal length of objective lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 392: A member of the crew of a SPACESHIP experiences weightlessness in a space when they Options:
  A) Fall freely from the earth’s gravitational field
  B) Is walking on the planet
  C) In between the sun and the earth
  D) Holding anything in space is negative
  Show Answer
  The correct answer is A .
• Question 393: Which of the following instruments has a pure tone? Options:
  A) guitar
  B) vibrating strings
  C) tuning fork
  D) siren
  Show Answer
  The correct answer is C .
• Question 394:

  The secondary pigments consist of?

  Options:
  A) blue, green, and violet
  B) yellow, green, and magenta
  C) magenta, yellow, and cyan
  D) red, green, and blue
  Show Answer
  The correct answer is C .
• Question 395:

  A simple pendulum, has a period of 5.77 seconds. When the pendulum is shortened by 3 m, the period is 4.60 seconds. Calculate the new length of the pendulum

  Options:
  A) 5.23 m
  B) 6.42 m
  C) 4.87 m
  D) 7.26 m
  Show Answer
  The correct answer is A .
• Question 396: An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is Options:
  A) mg
  B) (m + pv)g
  C) (m - pv)g
  D) pvg
  E) [M/m-pv]g
  Show Answer
  The correct answer is C .
• Question 397: The primary aim in high tension transmission is to Options:
  A) minimize electrical energy losses due to heat production
  B) increase the rate of energy transfer by using high voltage
  C) increase the current in the wire
  D) generate electricity at high current and low voltage
  Show Answer
  The correct answer is A .
• Question 398:

  

  The value of the series resistor required to convert the above galvanometer into a voltmeter with a full range deflection of 15V is

  Options:
  A) 985 ohms
  B) 990 ohms
  C) 995 ohms
  D) 1000 ohms
  E) 1005 ohms
  Show Answer
  The correct answer is C .
• Question 399: A force of 500N¹ is applied to a steel wire of cross-sectional area 0.2m², The tensile stress is Options:
  A) 2.5x10⁴Nm^-2
  B) 1.0x10²Nm^-2
  C) 1.0x10³Nm^-2
  D) 2.5x10³Nm^-2
  Show Answer
  The correct answer is D .
• Question 400:

  Which of the following statements are correct of the production and propagation of waves?

  I. vibration produces waves

  II. waves transmit energy along the medium

  III. the medium through which the wave travels does not travel with the wave

  IV. waves do not require any medium for transmission

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