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 891:

  

  Each of the figures in the diagram above represent two current carrying conductors situated close to each other. In which two diagrams, are the forces between the two wires attractive

  Options:
  A) I and V
  B) I and II
  C) II and IV
  D) II and V
  E) III and IV
  Show Answer
  The correct answer is C .
• Question 892:

  

  An air column 10cm in length is trapped into the sea end of a capillary tube by a 15cm column of mercury with the tube held vertically as shown above. On inverting the tube the air column becomes 15cm long. The atmospheric pressure during the experiment is

  Options:
  A) 90cm
  B) 76cm
  C) 75cm
  D) 60cm
  E) 50cm
  Show Answer
  The correct answer is B .
• Question 893: Which of the following pairs is an example of translucent bodies? Options:
  A) Cardboard and moon
  B) Clear water and glass
  C) Frosted glass and waxed paper
  D) Oiled paper and brick
  E) Wood and metal sheet
  Show Answer
  The correct answer is C .
• Question 894: A thin wire with heavy weights attached to both ends is hung over a block of ice resting on two supports. If the wire cuts through the ice block while the block remains solid behind the wire, the process is called Options:
  A) condensation
  B) sublimation
  C) regelation
  D) fusion
  Show Answer
  The correct answer is C .
• Question 895: The force on a current carrying conductor in a magnetic field is greatest when the Options:
  A) conductor makes an angle of 60° with the field
  B) force is idependent of the angles between the fields and the conductor
  C) conductor is parallel with the field
  D) conductor is at right angle with the field
  Show Answer
  The correct answer is D .
• Question 896: The heat produced in a conductor carrying an electric current is Options:
  A) inversely proportional to the current and the resistance
  B) directly proportional to the current, resistance and the time
  C) inversely proportional to of the resistance, current and the time
  D) directly proportional to the square of the current, the resistance and the time
  Show Answer
  The correct answer is D .
• Question 897:

  An object is placed 35 cm away from a convex mirror with a focal length of magnitude 15 cm. What is the location of the image?

  Options:
  A) 26.25 cm behind the mirror
  B) 10.5 cm behind the mirror
  C) 26.25 cm in front of the mirror
  D) 10.5 cm in front of the mirror
  Show Answer
  The correct answer is A .
• Question 898: The half-life of a radioactive substance is 2 seconds. Calculate the decay constant Options:
  A) 0.035s^-1
  B) 0.151s^-1
  C) 0.347s^-1
  D) 0.576s^-1
  E) 1.386s^-1
  Show Answer
  The correct answer is C .
• Question 899: Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then Options:
  A) A and B are equal
  B) A is greater than B
  C) the angle between A and B is 0°
  D) the angle between A and B is 90°
  E) the angle between A and B is 180°
  Show Answer
  The correct answer is E .
• Question 900: A simple pendulum of length 0.4m has a period of 2s. What is the period a similar pendulum of length 0.8m at the same place? Options:
  A) 8s
  B) 4s
  C) 2$\sqrt{2}s$
  D) $\sqrt{2}s$
  Show Answer
  The correct answer is C .