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 991:

  

  Two mirrors M1 and M2 are inclined at right angles as shown above calculate the angle of reflection of the ray of light at M2

  Options:
  A) ${30}^{\circ }$
  B) ${45}^{\circ }$
  C) ${60}^{\circ }$
  D) ${90}^{\circ }$
  Show Answer
  The correct answer is C .
• Question 992: An electric device is rated 2000 W, 250 v. The correct fuse rating of the device is? Options:
  A) 9 A
  B) 8 A
  C) 6 A
  D) 7 A
  Show Answer
  The correct answer is B .
• Question 993: The melting point of a substance is equivalent to its Options:
  A) Vapour Pressure
  B) Solidification Temperature
  C) Liquidification Temperature
  D) Solidification Pressures
  Show Answer
  The correct answer is B .
• Question 994:

  I. Diameter of a small ball bearing.

  II. Thickness of a pieces of paper.

  III. Diameter of a measuring cylinder.

  IV. Length of a piece of wire.

  Which of the above can be measured using a micrometer screw gauge?

  Options:
  A) I, II and IV only .
  B) I and II only
  C) II and III only
  D) III and IV only
  Show Answer
  The correct answer is B .
• Question 995: The electrolyte in the Nickei-iron (Nife) accumulator is Options:
  A) potassium hydroxide solution
  B) dilute tetraoxosulphate(VI)acid
  C) copper tetraoxosulphate(VI)solution
  D) ammonium chloride solution
  Show Answer
  The correct answer is A .
• Question 996: A galvanometer of internal resistance 50$\mathrm{\Omega }$ has a full scale deflection for a current of 5mA. What is the resistance required to covert it to a voltmeter with full scale deflection of 10V? Options:
  A) 1750$\mathrm{\Omega }$
  B) 1950$\mathrm{\Omega }$
  C) 2000$\mathrm{\Omega }$
  D) 2500$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 997: A platinum resistance thermometer wire has a resistance of 5 ohms at 0^oC and 5.5 ohms at 100^oC. Calculate the temperature of the wire when the resistance is 5.2 ohms Options:
  A) 80^oC
  B) 60^oC
  C) 40^oC
  D) 10^oC
  Show Answer
  The correct answer is C .
• Question 998:

  

  PQ is a thin rod on a horizontal table, RS is a plane mirror inclined at ${45}^{\circ }C$ to the horizontal as shown above. The image of PQ as seen in the mirror by the eye T is

  Options:
  A) horizontal
  B) parallel to the mirror
  C) at infinity
  D) vertical
  E) highly magnified
  Show Answer
  The correct answer is B .
• Question 999: An object of mass 100g projected vertically upwards from the ground level has a velocity of 20ms^-1 at a height of 10m. calculate its initial kinetic energy at the ground level.[g = 10ms^-2, neglect air resistance] Options:
  A) 10 J
  B) 20 J
  C) 30 J
  D) 50 J
  Show Answer
  The correct answer is C .
• Question 1000: The thermometric properties of the thermocouple is that is Options:
  A) e.m.f. changes with temperature
  B) resistance changes with temperature
  C) volume changes with temperature
  D) pressure changes with resistance
  Show Answer
  The correct answer is A .