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 2221: When a current of 1 .0A flows in an electrolyte for 3.0h, a mass of 1 .0g is deposited. What mass will be deposited in 10.0h if a current of 3.0A flows through the electrolyte? Options:
  A) 30.0g
  B) 24.0g
  C) 10.0g
  D) 6.0g
  E) 0.4g
  Show Answer
  The correct answer is B .
• Question 2222: An astronaut is walking on the moon where the magnitude of the acceleration due to gravity "g’ is one-sixth that on earth. Compared with their magnitudes on the earth, his mass and weight on the moon are Options:
  A) both less
  B) less and the same respectively
  C) the same and less respectively
  D) the same as on earth
  E) both greater.
  Show Answer
  The correct answer is C .
• Question 2223: I. reproducibility II. SensibilityIII. High terminal capacityiv. High accuracy The quantities of a good thermometer include? Options:
  A) I, II and IV only
  B) I, III and IV only
  C) I, II and III only
  D) II, III and IV only
  Show Answer
  The correct answer is D .
• Question 2224: A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, If the average distance between successive nodes on the wire is 45cm, find the speed of the transverse waves in the wire. Options:
  A) 27ms^-1
  B) 54ms^-1
  C) 90ms^-1
  D) 108ms^-1
  Show Answer
  The correct answer is A .
• Question 2225:

  Determine the value of x from the nuclear reaction below:

  ${}_{86}^{222}Rn$ → ${}_{88}^{x}Ra$ + 2β + energy

  Options:
  A) 220
  B) 222
  C) 224
  D) 226
  E) 228
  Show Answer
  The correct answer is B .
• Question 2226: A current carrying conductor experiences a force when placed in a magnetic field because the Options:
  A) conductor is magnetized
  B) magnetic field of the current interacts with external magnetic field
  C) force is due to the motor principle
  D) electric field of the current interacts with the external magnetic field
  Show Answer
  The correct answer is B .
• Question 2227: If two charged plates are maintained at a potential difference of 3 kv, the work done in taking a charge of 600µc across the field is Options:
  A) 0.8j
  B) 1.8j
  C) 9.0j
  D) 18.0j
  Show Answer
  The correct answer is B .
• Question 2228:

  If electron are accelerated from rest through a potential difference of 10kv, what is the wavelength of the associated electron

  [m = 9.1 x 10^-31kg, e = 1.6 x 10^-19C, h = 6.6 x 10^-34js]

  Options:
  A) 1.22 x 10^-11m
  B) 3.87 x 10^-10m
  C) 2.27 x 10¹¹m
  D) 2.27 x 10¹⁴m
  Show Answer
  The correct answer is A .
• Question 2229: The ratio of electrostatic force F_E to gravitational force F_G between two protons each of charge e and mass m, at a distance d is Options:
  A) e/4πԐoGm
  B) e²/Gm²
  C) Gm²/4πԐoe²
  D) e²/4πԐoeGm²
  Show Answer
  The correct answer is D .
• Question 2230: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .