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 1171:

  Of the following which is different from the other?

  Options:
  A) x-rays
  B) gamma-rays
  C) cathode rays
  D) ultra violet rays
  E) infrared rays
  Show Answer
  The correct answer is C .
• Question 1172: which of the following statements are TRUE of isotopes? i. isotopes of an element have the same chemical properties because they have the same number of electrons. ii. isotopes of elements are normally separated using physical properties. iii. isotopes of an element have the same number of protons in their nuclei. Options:
  A) i and ii only
  B) i and iii only
  C) ii and iii only
  D) i, ii, and iii
  Show Answer
  The correct answer is B .
• Question 1173: I. Refraction II. Interference III. Diffraction
  Which of the above properties are common to all waves? Options:
  A) II and III only
  B) I, II and III
  C) I and II only
  D) I and III only
  Show Answer
  The correct answer is B .
• Question 1174: At what respective value of a, b, and c would the unit of work, the joule, be dimensionally similar to M^a L^b T^c? Options:
  A) 1, – 2, 1
  B) 1, 2, – 2
  C) 1, 1, –2
  D) 2, 2, 1
  Show Answer
  The correct answer is B .
• Question 1175: When a negatively charged rod is brought near the cap of a charged gold leaf electroscope which has positive charges, the leaf Options:
  A) Remains the same
  B) Collapses
  C) Collapses and diverges again
  D) Diverges
  Show Answer
  The correct answer is B .
• Question 1176: If relative density of a metal is 19, what will be the mass of 20cm³ of the metal when immersed in water? Options:
  A) 380g
  B) 400g
  C) 360g
  D) 39g
  E) 180g
  Show Answer
  The correct answer is A .
• Question 1177: The S.I unit of moment of a force is Options:
  A) kgm
  B) µm
  C) Jm
  D) µm${}^{-1}$
  Show Answer
  The correct answer is B .
• Question 1178: To produce a parallel beam of light from a concave mirror, the distance at a which the lamp should be placed from the mirror is equal to Options:
  A) the focal length
  B) two times the focal length
  C) the distance of the image
  D) two times the radius of curvature
  Show Answer
  The correct answer is A .
• Question 1179: A solid weigh 10 .00 N in air, 6 N when fully immersed in water and 7 . 0 N when fully immersed in a liquid X. Calculate the relative density of the liquid, X. Options:
  A) 5/3
  B) 4/3
  C) 3/4
  D) 7/10
  Show Answer
  The correct answer is C .
• Question 1180: On which of the following is the operation of a moving coil galvanometer based? Options:
  A) Magnetic effect of electric current
  B) Electromagnetic induction
  C) Chemical reaction produced by electricity
  D) Force on current carrying conductor in a magnetic field
  E) Electrical energy and power
  Show Answer
  The correct answer is D .