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 1551:

  In a radioactive series:

  ${}_{92}^{235}L{\to }_{93}^{235}M{\to }_{90}^{235}N{\to }_{90}^{235}\varphi$

  The particles emitted are respectively

  Options:
  A) $\beta \beta \alpha$
  B) $\alpha \gamma \beta$
  C) $\gamma \alpha \beta$
  D) $\alpha \alpha \beta$
  E) $\beta \alpha \beta$
  Show Answer
  The correct answer is C .
• Question 1552: Which of the following is a vector? Options:
  A) Electric charge
  B) Electric field
  C) Electrical potential difference
  D) Electrical capacitance
  Show Answer
  The correct answer is B .
• Question 1553: What is stored by a dry Leclanhé cell? Options:
  A) chemical energy
  B) heat energy
  C) mechanical energy
  D) nuclear energy
  E) solar energy
  Show Answer
  The correct answer is A .
• Question 1554:

  The inner diameter of a test tube can be measured accurately using a?

  Options:
  A) micrometer screw gauge
  B) pair of dividers
  C) meter rule
  D) pair of vernier calipers
  Show Answer
  The correct answer is D .
• Question 1555: The count rate of a radioactive material is 800 count/min. If the half-life of the material is 4 days, what would the count rate be in 16 days later Options:
  A) 200 count / min
  B) 100 count / min
  C) 50 count / min
  D) 25 count / min
  Show Answer
  The correct answer is C .
• Question 1556: A regular spacing or arrangement of atoms in a crystalline material is called Options:
  A) Orbit
  B) Lattice
  C) Atomic structure
  D) Energy level
  Show Answer
  The correct answer is B .
• Question 1557: A gas would serve as an electrical conductor under Options:
  A) reduced pressure and high current
  B) increased magnetic field
  C) reduced pressure and reduced potential
  D) exposure to visible light
  Show Answer
  The correct answer is A .
• Question 1558: Tea pots are often silver-coated to prevent heat loss by Options:
  A) conduction only
  B) convention only
  C) convection and conduction
  D) radiation only
  Show Answer
  The correct answer is D .
• Question 1559: Two closed vessels contain equal volumes of boiling water and are identical except that one is blackened on the outside while the other is polished. Which of the following is correct? Options:
  A) the polished vessel will cool faster because a polished surface is a good radiator
  B) the polished vessel will cool faster because it will absorbe less heat from the room
  C) the black vessel will cool faster because it is a better conductor of heat
  D) the polished vesselwill cool faster because it reflects heat better
  E) the black vessel will cool faster because a black surface radiates heat faster than a polished one
  Show Answer
  The correct answer is D .
• Question 1560: When fixed mass of an ideal gas expands at constant temperature, which property of the gas molecule increases? Options:
  A) average number per unit volume
  B) average kinetic energy
  C) average speed
  D) average seperation
  E) average number of collisions per unit time
  Show Answer
  The correct answer is E .