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 671:

  Shadows and eclipses result from the

  Options:
  A) refraction of light
  B) reflection of light
  C) defraction of light
  D) rectilinear propagation of light
  Show Answer
  The correct answer is D .
• Question 672: A submarine is observed to rise from a real depth off 80 m to 60 m in water. calculate the change in apparent depth.
  [Refraction index of water (4)/3] Options:
  A) 45 m
  B) 80 m
  C) 15 m
  D) 60 m
  Show Answer
  The correct answer is C .
• Question 673:

  An astronomical telescope is said to be in normal adjustment when the?

  Options:
  A) eye is accommodated
  B) focal length of an object lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 674:

  Aluminium is sometimes used as the leaf of an electroscope because it

  Options:
  A) is a light material
  B) is a good conductor
  C) is a good insulator
  D) can be converted into thin sheets
  Show Answer
  The correct answer is D .
• Question 675: A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is? Options:
  A) 850 JK^-1
  B) 750 JK^-1
  C) 650 JK^-1
  D) 500 JK^-1
  Show Answer
  The correct answer is B .
• Question 676: An aircraft travelled from calabar to kano as follows: it flew first to ilorin convering a distance of 300km, 30^o west of North, and then flew 400km, 60^o East of North to kano. What is the resultant displacement? Options:
  A) 567km
  B) 410km
  C) 594km
  D) 500km
  E) 600km
  Show Answer
  The correct answer is D .
• Question 677: A slight loading of a tuning fork has the effect of Options:
  A) decreasing its amplitude
  B) increasing its amplitude
  C) decreasing its frequency
  D) increasing its frequency
  Show Answer
  The correct answer is B .
• Question 678: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .
• Question 679: Which of the following statements is correct? Silvered walls of a vacuum flask are used to prevent Options:
  A) heat loss due to conduction
  B) vacuum loss
  C) heat entry into the inner flask due to convection
  D) heat loss due to radiation
  E) heat loss due to convection
  Show Answer
  The correct answer is D .
• Question 680: 250g of lead at 170^oC is dropped into 100g of water at 0^oC. If the final temperature is 12^oC, the specific heat of lead is (specific heat of water is 4,200J/kg^oC) Options:
  A) 39.5J/kg^oC
  B) 50.4J/kg^oC
  C) 127.6J/kg^oC
  D) 154.6J/kg^oC
  E) 173.4J/kg^oC
  Show Answer
  The correct answer is C .