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 901:

  

  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 902:

  If a sound wave goes from a cold air region to a hot air region, its wavelength will?

  Options:
  A) increase
  B) decrease
  C) decrease then increase
  D) remain constant
  Show Answer
  The correct answer is A .
• Question 903:

  When the plate area of a capacitor increases?

  Options:
  A) the voltage can withstand increase
  B) the capacitance decreases
  C) the capacitance is unaffected
  D) the capacitance increases
  Show Answer
  The correct answer is D .
• Question 904: A person can focus an object only when it lies within 200cm from him. Which spectacles should be used to increase his maximum distance of distinct vision infinity Options:
  A) Convex lens
  B) Binoculars
  C) Concave lens
  D) Plane glasses
  Show Answer
  The correct answer is C .
• Question 905: A clinical thermometer is different from other mercury in glass thermometers owing to Options:
  A) the constriction on its stem
  B) the grade of mercury used in it
  C) its long stem
  D) its wide range of temperatures
  Show Answer
  The correct answer is A .
• Question 906: An arrow of mass 0.1kg moving with a horizontal velocity of 15ms^-1 is shot into a wooden block of mass 0.4kg lying at rest on a smooth horizontal surface. Their common velocity after impact is Options:
  A) 15.0 ms^-1
  B) 7.5 ms^-1
  C) 3.8 ms^-1
  D) 3.0 ms^-1
  Show Answer
  The correct answer is D .
• Question 907: The resistances of platinum wire at the ice and steam points are 0.75 ohm and 1.05 ohm respectively. Determine the temperature at which the resistance of the wire is 0.90 ohm Options:
  A) 43.0^oC
  B) 50.0^oC
  C) 69.9^oC
  D) 87.0^oC
  Show Answer
  The correct answer is B .
• Question 908: To convert a galvanometer to a voltmeter, a Options:
  A) high resistance is connected to it in series
  B) high resistance is connected to it in parallel
  C) low resistance is connected to it in parallel
  D) low resistance is connected to it in series
  Show Answer
  The correct answer is A .
• Question 909:

  The mass of a nucleus is the

  Options:
  A) total number of its proton and neutrons
  B) number of its protons
  C) mass of its electrons
  D) total number of its protons and electrons
  Show Answer
  The correct answer is A .
• Question 910: Radio waves have a velocity of 3 x 10⁸ms^-1. A radio station sends out a broadcast on a frequency of 800kHz. The wavelength of the broadcast is Options:
  A) 375.0m
  B) 267.0m
  C) 240.0m
  D) 37.5m
  E) 26.7m
  Show Answer
  The correct answer is A .