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 1601:

  

  The diagram above shows three circuits, the internal resistances of the batteries are negligible. which of the currents is the largest

  Options:
  A) I₁
  B) I₂
  C) I₃
  D) I₄
  E) I₅
  Show Answer
  The correct answer is E .
• Question 1602: The force on a charge moving with velocity v in a magnetic field B is half of the maximum force when the angle between v and B is Options:
  A) 90^o
  B) 45^o
  C) 30^o
  D) 0^o
  Show Answer
  The correct answer is C .
• Question 1603: Which of the following statements describes an atom accurately? i. atoms of all elements are identical ii. an atom contains a nucleus and number of electrons iii. due to the electrons in the atom an atom is negatively charged iv. electrons in the atom move in circular orbits round the nucleus Options:
  A) i and ii
  B) ii and iii
  C) iii and iv
  D) ii and iv only
  E) i,ii and iii
  Show Answer
  The correct answer is D .
• Question 1604:

  The velocities of light in air and glass are 3.0 x 10${}^8$ms${}^{-1}$ and 2.0 x 10${}^8$ms${}^{-1}$ respectively. If the angle of refraction is 30º, the sine of the angle of incidence is?

  Options:
  A) 0.33
  B) 0.50
  C) 0.67
  D) 0.75
  Show Answer
  The correct answer is D .
• Question 1605: In a reverse biased junction diode, current flows in by Options:
  A) positive holes alone
  B) majority carriers
  C) electron alone
  D) minority carriers
  Show Answer
  The correct answer is D .
• Question 1606:

  The mechanical advantage (MA) of an inclined plane depends on

  Options:
  A) its length
  B) its height
  C) the product of its length and height
  D) the ratio of its length to its height
  Show Answer
  The correct answer is D .
• Question 1607: An image in a convex lens is upright and magnified 3 times. If the focal length of the lens is 15 cm, what is the object distance? Options:
  A) 10 cm
  B) 25 cm
  C) 16 cm
  D) 14 cm
  Show Answer
  The correct answer is A .
• Question 1608: The heat produced in a conductor carrying an electric current is Options:
  A) inversely proportional to the current and the resistance
  B) directly proportional to the current, resistance and the time
  C) inversely proportional to of the resistance, current and the time
  D) directly proportional to the square of the current, the resistance and the time
  Show Answer
  The correct answer is D .
• Question 1609: An electric iron is rated at 1000watts, 250v. The corresponding maximum resistance and accompanying current is Options:
  A) 62.5A, 4.0$\mathrm{\Omega }$
  B) 16.0A, 62.5$\mathrm{\Omega }$
  C) 62.5A, 16.0$\mathrm{\Omega }$
  D) 4.0A, 62.5$\mathrm{\Omega }$
  E) 4.0A, 250$\mathrm{\Omega }$
  Show Answer
  The correct answer is D .
• Question 1610: Total eclipse of the sun occurs when the Options:
  A) earth is between the moon and the sun
  B) sun is between the moon and the earth
  C) moon is between the sun and the earth
  D) ozone layer is threatened
  Show Answer
  The correct answer is C .