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 2161: In a hydraulic press , a force of 40N is applied on the effort piston of area 0.4m². If the force exerted on the load piston is 400N, the area of the large piston is Options:
  A) 4m²
  B) 8m²
  C) 2m²
  D) 1m²
  Show Answer
  The correct answer is A .
• Question 2162:

  When a brick is taken from the earth's surface to the moon, its mass

  Options:
  A) Remains constant
  B) Becomes zero
  C) Reduces
  D) increases
  Show Answer
  The correct answer is A .
• Question 2163: 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 2164:

  A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 $ms-1$

  Calculate the wave number of the wave.

  Options:
  A) 3
  B) 4
  C) 5
  D) 2
  Show Answer
  The correct answer is C .
• Question 2165:

  Which of the following does NOT describe the Image formed by a plane minor?

  Options:
  A) Erect
  B) Laterally inverted
  C) Same distance from mirror as object
  D) Magnified
  Show Answer
  The correct answer is D .
• Question 2166: Which of the following statements is NOT correct? Options:
  A) A galvanometer can be converted to an ammeter with a different range by connecting a high resistance in series
  B) An electric current always produces a magnetic field
  C) Maxwell's screw rule states that if a corkscrew moves inthe direction of the current, the hand turns in the direction of the lines of force
  D) Electromagnets are used in electric bells and telephone recievers
  E) The lines of force round a straight current carrying conductor are circular
  Show Answer
  The correct answer is A .
• Question 2167: Which of the following representations is correct for an atom X with 28 electrons and 30 neutrons? Options:
  A) ${}_{28}^{30}X$
  B) ${}_{30}^{28}X$
  C) ${}_{30}^{58}X$
  D) ${}_{28}^{58}X$
  Show Answer
  The correct answer is D .
• Question 2168:

  

  In the diagram above, if the south-poles of two magnets strokes steel bar, the polarities at T and V will respectively be

  Options:
  A) south and north
  B) north and south
  C) north and north
  D) south and south
  Show Answer
  The correct answer is C .
• Question 2169:

  Consider the wave equation y = 5mm sin [1cm${}^{-1}$x - 60s${}^{-1}$t]. The wave number is?

  Options:
  A) 0.1 cm${}^{-1}$
  B) 10cm${}^{-1}$
  C) 1.0cm${}^{-1}$
  D) 2cm${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 2170: 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 .