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 741: Which of the following is TRUE of the particles emitted in radioactive disintegration? Options:
  A) the alpha particle is the helium nucleus H
  B) the alpha particle is lighter than the beta particle
  C) the alpha particle is deflected more than the beta particle in a magnetic field
  D) the beta particle is deflected more than the alpha particle in a magnetic field
  Show Answer
  The correct answer is D .
• Question 742: The name given to the characteristics behaviour of substances which set their length perpendicular to a strong magnetic field instead of in line with it is Options:
  A) magnetization
  B) paramagnetism
  C) diamagnetism
  D) demagnetism
  E) ferromagnetism
  Show Answer
  The correct answer is A .
• Question 743: The physical properties of sound waves can best be described by Options:
  A) reflection and diffraction
  B) polarization and reflection
  C) polarization and diffraction
  D) polarization and refraction
  Show Answer
  The correct answer is A .
• Question 744:

  Which of the following is/are the limitations to the Rutherford's atomic models?

  I. It is applicable when energy is radiated as electrons are revolving

  II. It is applicable when energy is radiated in a continuous mode

  III. It is applicable to an atom with only one electron in the other shell

  Options:
  A) I only
  B) II only
  C) I and II only
  D) I, II and III only
  Show Answer
  The correct answer is C .
• Question 745:

  I. The number of neutrons released exceeds the number that caused the fission.

  II. There is loss of mass.

  III. Energy is produced.

  IV. Smaller nuclei merge to form larger nuclei

  Which of the statement above are correct about nuclear fission?

  Options:
  A) II,III and IV only
  B) I, II and IV only
  C) I,II and III only
  D) I, III and IV only
  Show Answer
  The correct answer is C .
• Question 746: A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms^-2] Options:
  A) 1.8m
  B) 2.0m
  C) 2.5m
  D) 3.0m
  Show Answer
  The correct answer is D .
• Question 747: If the linear magnification of the objective and eyepiece convex lenses of a compound microscope are 4 and 7 respectively. Calculate the angular magnification of the microscope Options:
  A) 2
  B) 3
  C) 11
  D) 28
  Show Answer
  The correct answer is D .
• Question 748: The fundamental frequency of vibration of a sonometer wire may be halved by Options:
  A) doubling the length of the wire
  B) doubling the mass of the wire
  C) reducing the tension by half
  D) reducing the absolute temperature by half
  Show Answer
  The correct answer is A .
• Question 749: In a projection lantern of focal length f, the object distance u, is such that Options:
  A) u > 2f > f
  B) u < f < 2f
  C) u = f < 2f
  D) f < u < 2f
  Show Answer
  The correct answer is D .
• Question 750: Which of the following statements are true in the structure of atoms? Options:
  A) the atoms of the differnt element differ only in the number of protons and electrons
  B) the num,ber of protons equals the number of electrons
  C) atoms are constructed according to the plan of our solar system
  D) all of the above
  E) A and C only
  Show Answer
  The correct answer is B .