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 901: A lamp is rated 240V 60W, calculate the resistance of its filament Options:
  A) 240$\mathrm{\Omega }$
  B) 360$\mathrm{\Omega }$
  C) 960$\mathrm{\Omega }$
  D) 1440$\mathrm{\Omega }$
  Show Answer
  The correct answer is C .
• Question 902:

  A metal sphere is placed on an insulating stand. A negatively charged rod is brought close to it. If the sphere is earthed and the rod is taken away, what will be the charge on the sphere?

  Options:
  A) The sphere will remain neutral.
  B) The sphere will have a net negative charge.
  C) The sphere will have a net positive charge.
  D) The sphere will become polarized
  Show Answer
  The correct answer is C .
• Question 903:

  Which of the following statement about the electromagnet shown above is correct?

  Options:
  A) when the current flows from A to B, the end A will be in north pole
  B) when the current flows from A to B, the end A will be south pole
  C) when the current flows from A to B, the end B will be north pole
  D) none of the above
  Show Answer
  The correct answer is B .
• Question 904:

  

  The circuit diagram above contains four ammeters W, X, Y and Z, Which of the following statements about the ammeter readings is correct

  Options:
  A) The reading of W is equal to that of Y and twice that of X
  B) The reading of Y is greater than that of Z
  C) The readings of W and Y are equal and each is greater than that of X
  D) The reading of Z is equal to the sum of the readings of Y and W
  Show Answer
  The correct answer is C .
• Question 905: The relationship between the period T and the length T of a smile pendulum is T = 2$\pi$ $(\frac{I}{g}{)}^{\frac{1}{2}}$. From experiment data of T and I, one can obtain the following graphs, i. T vs.I ii. T vs I² iii. T² vs. I iv. T vs $\sqrt{I}$ v. logT vs logI. Which of the following graphs, are linear? Options:
  A) all
  B) only i and ii
  C) only iii and iv
  D) iii,iv and v
  E) none of them
  Show Answer
  The correct answer is D .
• Question 906:

  The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?

  Options:
  A) concave mirror of focal length 5cm
  B) concave mirror of focal length 10cm
  C) convex mirror of focal length 5cm
  D) convex mirror of focal length 10cm
  Show Answer
  The correct answer is C .
• Question 907: a proton moving with a speed of 1.0 x 10⁶ms^-1 through a magnetic field of 1.0T experiences a magnetic force of magnitude 8.0 x 10^-14 N. The angle between the proton''s velocity and the field is Options:
  A) 60°
  B) 90°
  C) 30°
  D) 45°
  Show Answer
  The correct answer is C .
• Question 908: A man stands on a spring scale placed in a lift. The lift descends at constant velocity. As a result, the scale reads a weight Options:
  A) greater than the weight of the man
  B) the same as the weight of the man
  C) of zero
  D) less than the weight of the man
  E) greater than the weight of the man by 1kg
  Show Answer
  The correct answer is B .
• Question 909: Which of the following electromagnetic waves has the shortest wavelength? Options:
  A) Visible Light
  B) Ultraviolet rays
  C) Infrared rays
  D) Gamma rays
  Show Answer
  The correct answer is D .
• Question 910: The instrument used by designers to obtain different color pattern is called? Options:
  A) periscop
  B) sextant
  C) episcope
  D) kaleidoscope
  Show Answer
  The correct answer is D .