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 391:

  An object 40 cm high is 30cm from the pin hole camera. If the height of the image formed is 20 cm. What is the distance of the image from the pin height?

  Options:
  A) 15 cm
  B) 70 cm
  C) 40 cm
  D) 40 cm
  Show Answer
  The correct answer is A .
• Question 392:

  Which of the following can be described as high tension transmission?

  Options:
  A) High resistance and low voltage
  B) Low current and high voltage
  C) High current and low voltage
  D) High current and low resistance
  Show Answer
  The correct answer is B .
• Question 393: A tugboat is travelling from Asaba to Onitsha across the River Niger with a resultant velocity of 20 knots. If the river flows at 12 knots, the direction of motion of the boat relative to the direction of water flow is Options:
  A) 36.87^oC
  B) 53.13^oC
  C) 90^oC
  D) 136^oC
  E) 143.13^oC
  Show Answer
  The correct answer is B .
• Question 394: 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 20cm
  Show Answer
  The correct answer is A .
• Question 395: Volatile liquids usually Options:
  A) Have high boiling points
  B) have low boiling points
  C) have high densities
  D) have high melting points
  Show Answer
  The correct answer is B .
• Question 396:

  A 1000kg elevator is descending vertically with an acceleration of 1.0ms^-2, if the acceleration due to gravity is 10ms^-2, the tension in the suspending cable is

  Options:
  A) 1.0N
  B) 10.0N
  C) 9000.0N
  D) 11000N
  Show Answer
  The correct answer is C .
• Question 397: A household refrigerator is rated 200 watts. If electricity costs 5k per kWh, what is the cost of operating it in 20 days? Options:
  A) N4.80
  B) N48.00
  C) N480.00
  D) N4800.00
  Show Answer
  The correct answer is C .
• Question 398: A weightless vessel of dimensions 4m x 3m x 2m is filled with a liquid of density 1000kgm^-3 and sealed. What is the maximum pressure this container can exert on a flat surface? [g = 10ms^-2] Options:
  A) 9 x 10⁴NM^-2
  B) 4 x 10⁴NM^-2
  C) 3 x 10⁴NM^-2
  D) 2 x 10⁴NM^-2
  Show Answer
  The correct answer is D .
• Question 399: When a ball rolls on a smooth level ground, the motion of its center is Options:
  A) translational
  B) oscillatory
  C) random
  D) rotational
  Show Answer
  The correct answer is A .
• Question 400: The resistance of a 5m uniform wire of cross-sectional area 0.2 x 10^-6m² is 0.425. What is the resistivity of the material of the wire? Options:
  A) 1.10 x 10^-6$\mathrm{\Omega }$m
  B) 4.25 x 10^-6$\mathrm{\Omega }$m
  C) 2.40 x 10^-7$\mathrm{\Omega }$m
  D) 1.70 x 10^-8$\mathrm{\Omega }$m
  Show Answer
  The correct answer is D .